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BIG-Bench Extra Hard (BBEH) / Alice, Bob, Claire, Dave, Eve, Fred, and Gertrude are holding a white elephant…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

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Alice, Bob, Claire, Dave, Eve, Fred, and Gertrude are holding a white elephant gift exchange. At the start of the event, they are each holding a present of a different color: Alice has a blue present, Bob has a black ball, Claire has a purple present, Dave has a pink ball, Eve has a green present, Fred has a orange ball, and Gertrude has a yellow present.
As the event progresses, pairs of people swap gifts. First, Bob and Alice swap their gifts. Then, Bob and Alice swap their gifts. Then, Bob and Alice discuss something. Then, Bob and Alice swap their gifts. Then, Dave and Alice swap their gifts. Then, Alice and Dave swap their gifts. Then, Bob and Dave swap their gifts. Then, Dave and Eve swap their gifts. Then, Eve and Dave swap their gifts. Then, Dave and Bob swap their gifts. Then, Dave and Alice swap their gifts. Then, Dave and Alice discuss something. Then, Dave and Alice swap their gifts. Then, Fred and Claire swap their gifts. Then, Claire and Alice swap their gifts. Then, Alice and Claire swap their gifts. Then, Claire and Fred swap their gifts. Then, Eve and Bob swap their gifts. Then, Eve and Bob discuss something. Then, Eve and Bob swap their gifts. Then, Alice and Gertrude swap their gifts. Then, Gertrude and Claire swap their gifts. Then, Claire and Gertrude swap their gifts. Then, Gertrude and Alice swap their gifts. Then, nothing happens for a while. Then, Alice and Eve swap their gifts. Then, Alice and Eve discuss something. Then, Alice and Eve swap their gifts. Then, Bob and Dave swap their gifts. Then, Dave and Gertrude swap their gifts. Then, Gertrude and Dave swap their gifts. Then, Dave and Bob swap their gifts. Then, nothing happens for a while. Then, Eve and Dave swap their gifts. Then, Dave and Alice swap their gifts. Then, Alice and Dave swap their gifts. Then, Dave and Eve swap their gifts. Then, Claire and Eve swap their gifts. Then, Eve and Claire swap their gifts. Then, nothing happens for a while. Then, nothing happens for a while. Then, Bob and Claire swap their gifts. Then, Claire and Dave swap their gifts. Then, Dave and Claire swap their gifts. Then, Claire and Bob swap their gifts. Then, Fred and Gertrude swap their gifts. Then, Fred and Gertrude discuss something. Then, Fred and Gertrude swap their gifts. Then, Fred and Gertrude swap their gifts. Then, Gertrude and Dave swap their gifts. Then, Dave and Gertrude swap their gifts. Then, Gertrude and Fred swap their gifts. Then, Alice and Eve swap their gifts. Then, Alice and Eve discuss something. Then, Alice and Eve swap their gifts. Then, Dave and Bob swap their gifts. Then, Bob and Dave swap their gifts. Then, nothing happens for a while. Then, Eve and Claire swap their gifts. Then, Claire and Eve swap their gifts. Then, Eve and Gertrude swap their gifts. Then, Eve and Gertrude discuss something. Then, Eve and Gertrude swap their gifts. Then, nothing happens for a while. Then, Alice and Claire swap their gifts. Then, Claire and Alice swap their gifts. Then, nothing happens for a while. Then, nothing happens for a while. Then, Eve and Dave swap their gifts. Then, Dave and Claire swap their gifts. Then, Claire and Dave swap their gifts. Then, Dave and Eve swap their gifts. Then, nothing happens for a while. Then, nothing happens for a while. Then, Eve and Fred swap their gifts. Then, Alice and Eve swap their gifts. Then, Alice and Eve discuss something. Then, Alice and Eve swap their gifts. Then, Alice and Gertrude swap their gifts. Then, Alice and Gertrude discuss something. Then, Alice and Gertrude swap their gifts. Then, Fred and Alice swap their gifts. Then, Alice and Fred swap their gifts. Then, nothing happens for a while. Then, Gertrude and Claire swap their gifts. Then, Claire and Gertrude swap their gifts. Then, nothing happens for a while. Then, Fred and Dave swap their gifts. Then, Dave and Eve swap their gifts. Then, Eve and Dave swap their gifts. Then, Dave and Fred swap their gifts. Then, Eve and Fred swap their gifts. Then, Fred and Alice swap their gifts. Then, Alice and Fred swap their gifts. Then, Fred and Eve swap their gifts. Then, Alice and Dave swap their gifts. Then, Dave and Alice swap their gifts. Then, nothing happens for a while. Then, Fred and Gertrude swap their gifts. Then, Gertrude and Bob swap their gifts. Then, Bob and Gertrude swap their gifts. Then, Gertrude and Fred swap their gifts. Then, nothing happens for a while. Then, Bob and Claire swap their gifts. Then, Claire and Bob swap their gifts. Then, Alice and Claire swap their gifts. Then, Claire and Alice swap their gifts. Then, Gertrude and Eve swap their gifts. Then, Eve and Dave swap their gifts. Then, Dave and Eve swap their gifts. Then, Eve and Gertrude swap their gifts. Then, Eve and Bob swap their gifts. Then, Eve and Bob discuss something. Then, Eve and Bob swap their gifts. Then, nothing happens for a while. Then, Gertrude and Dave swap their gifts. Then, Dave and Alice swap their gifts. Then, Alice and Dave swap their gifts. Then, Dave and Gertrude swap their gifts. Then, Claire and Bob swap their gifts. Then, Bob and Claire swap their gifts. Then, nothing happens for a while. Then, Gertrude and Alice swap their gifts. Then, Alice and Gertrude swap their gifts. Then, Bob and Dave swap their gifts. Then, Bob and Dave discuss something. Then, Bob and Dave swap their gifts. Then, Fred and Bob swap their gifts. Then, Fred and Bob discuss something. Then, Fred and Bob swap their gifts. Then, Claire and Alice swap their gifts. Then, Alice and Fred swap their gifts. Then, Fred and Alice swap their gifts. Then, Alice and Claire swap their gifts. Then, Dave and Fred swap their gifts. Then, Dave and Fred discuss something. Then, Dave and Fred swap their gifts. Then, Gertrude and Dave swap their gifts. Then, Gertrude and Dave discuss something. Then, Gertrude and Dave swap their gifts. Then, nothing happens for a while. Then, Fred and Gertrude swap their gifts. Then, Gertrude and Fred swap their gifts. Then, Dave and Alice swap their gifts. Then, Alice and Dave swap their gifts. Then, Alice and Bob swap their gifts. Then, Alice and Bob discuss something. Then, Alice and Bob swap their gifts. Then, Claire and Eve swap their gifts. Then, Eve and Gertrude swap their gifts. Then, Gertrude and Eve swap their gifts. Then, Eve and Claire swap their gifts. Then, Bob and Alice swap their gifts. Then, Gertrude and Claire swap their gifts. Then, Gertrude and Claire discuss something. Then, Gertrude and Claire swap their gifts. Then, nothing happens for a while. Then, Eve and Dave swap their gifts. Then, Dave and Claire swap their gifts. Then, Claire and Dave swap their gifts. Then, Dave and Eve swap their gifts. Then, Gertrude and Eve swap their gifts. Then, Gertrude and Eve discuss something. Then, Gertrude and Eve swap their gifts. Then, Gertrude and Fred swap their gifts. Then, Fred and Dave swap their gifts. Then, Dave and Fred swap their gifts. Then, Fred and Gertrude swap their gifts. Then, Alice and Fred swap their gifts. Then, Alice and Fred discuss something. Then, Alice and Fred swap their gifts. Then, nothing happens for a while. Then, Bob and Alice swap their gifts. Then, Bob and Alice discuss something. Then, Bob and Alice swap their gifts. Then, Gertrude and Claire swap their gifts. Then, Claire and Fred swap their gifts. Then, Fred and Claire swap their gifts. Then, Claire and Gertrude swap their gifts. Then, Fred and Gertrude swap their gifts. Then, Gertrude and Fred swap their gifts. Then, Dave and Eve swap their gifts. Then, Eve and Bob swap their gifts. Then, Bob and Eve swap their gifts. Then, Eve and Dave swap their gifts. Then, nothing happens for a while. Then, Bob and Fred swap their gifts. Then, Bob and Fred discuss something. Then, Bob and Fred swap their gifts. Then, Bob and Claire swap their gifts. Then, Claire and Bob swap their gifts. Then, nothing happens for a while. Then, Gertrude and Eve swap their gifts. Then, Eve and Gertrude swap their gifts. Then, Eve and Gertrude swap their gifts. Then, Gertrude and Eve swap their gifts. Then, Gertrude and Fred swap their gifts. Then, Fred and Claire swap their gifts. Then, Claire and Fred swap their gifts. Then, Fred and Gertrude swap their gifts. Then, nothing happens for a while. Then, Dave and Alice swap their gifts. Then, Dave and Alice discuss something. Then, Dave and Alice swap their gifts. Then, Alice and Bob swap their gifts. Then, Alice and Bob discuss something. Then, Alice and Bob swap their gifts. Then, Dave and Alice swap their gifts. Then, Alice and Dave swap their gifts. Then, nothing happens for a while. Then, Claire and Alice swap their gifts. Then, Alice and Eve swap their gifts. Then, Eve and Alice swap their gifts. Then, Alice and Claire swap their gifts. Then, Fred and Alice swap their gifts. Then, Alice and Gertrude swap their gifts. Then, Gertrude and Alice swap their gifts. Then, Alice and Fred swap their gifts. Then, Gertrude and Eve swap their gifts. Then, Gertrude and Eve discuss something. Then, Gertrude and Eve swap their gifts. Then, Alice and Eve swap their gifts. Then, Eve and Claire swap their gifts. Then, Claire and Eve swap their gifts. Then, Eve and Alice swap their gifts. Then, Fred and Eve swap their gifts. Then, Eve and Fred swap their gifts. Then, Dave and Bob swap their gifts. Then, Bob and Dave swap their gifts. Then, Alice and Dave swap their gifts. Then, Dave and Gertrude swap their gifts. Then, Gertrude and Dave swap their gifts. Then, Dave and Alice swap their gifts. Then, Dave and Claire swap their gifts. Then, Dave and Claire discuss something. Then, Dave and Claire swap their gifts. Then, Gertrude and Fred swap their gifts. Then, Fred and Claire swap their gifts. Then, Claire and Fred swap their gifts. Then, Fred and Gertrude swap their gifts. Then, Eve and Dave swap their gifts. Then, Dave and Eve swap their gifts. Then, Dave and Bob swap their gifts. Then, Bob and Claire swap their gifts. Then, Claire and Bob swap their gifts. Then, Bob and Dave swap their gifts. Then, Alice and Gertrude swap their gifts. Then, Gertrude and Alice swap their gifts. Then, Fred and Alice swap their gifts. Then, Alice and Fred swap their gifts. Then, Bob and Gertrude swap their gifts. Then, Gertrude and Bob swap their gifts. Then, Gertrude and Claire swap their gifts. Then, Gertrude and Claire discuss something. Then, Gertrude and Claire swap their gifts. Then, nothing happens for a while. Then, Bob and Claire swap their gifts. Then, Claire and Bob swap their gifts. Then, nothing happens for a while. Then, Claire and Eve swap their gifts. Then, Eve and Claire swap their gifts. Then, Gertrude and Dave swap their gifts. Then, Dave and Bob swap their gifts. Then, Bob and Dave swap their gifts. Then, Dave and Gertrude swap their gifts. Then, nothing happens for a while. Then, Claire and Fred swap their gifts. Then, Fred and Gertrude swap their gifts. Then, Gertrude and Fred swap their gifts. Then, Fred and Claire swap their gifts. Then, Bob and Dave swap their gifts. Then, Dave and Eve swap their gifts. Then, Eve and Dave swap their gifts. Then, Dave and Bob swap their gifts. Then, Eve and Gertrude swap their gifts. Then, Gertrude and Claire swap their gifts. Then, Claire and Gertrude swap their gifts. Then, Gertrude and Eve swap their gifts. Then, Gertrude and Fred swap their gifts. Then, Fred and Gertrude swap their gifts. Then, Dave and Claire swap their gifts. Then, Alice and Gertrude swap their gifts. Then, Gertrude and Alice swap their gifts. Then, Gertrude and Bob swap their gifts. Then, Bob and Claire swap their gifts. Then, Claire and Bob swap their gifts. Then, Bob and Gertrude swap their gifts. Then, Gertrude and Dave swap their gifts. Then, Dave and Bob swap their gifts. Then, Bob and Dave swap their gifts. Then, Dave and Gertrude swap their gifts. Then, Eve and Bob swap their gifts. Then, Eve and Bob discuss something. Then, Eve and Bob swap their gifts. Then, Bob and Fred swap their gifts. Then, Bob and Fred discuss something. Then, Bob and Fred swap their gifts. Then, Dave and Gertrude swap their gifts. Then, Dave and Gertrude discuss something. Then, Dave and Gertrude swap their gifts. Then, Alice and Fred swap their gifts. Then, Fred and Alice swap their gifts. Then, Bob and Eve swap their gifts. Then, Eve and Fred swap their gifts. Then, Fred and Eve swap their gifts. Then, Eve and Bob swap their gifts. Then, Gertrude and Eve swap their gifts. Then, Eve and Gertrude swap their gifts. Then, Claire and Gertrude swap their gifts. Then, Gertrude and Fred swap their gifts. Then, Fred and Gertrude swap their gifts. Then, Gertrude and Claire swap their gifts. Then, nothing happens for a while. Then, Fred and Eve swap their gifts. Then, Eve and Fred swap their gifts. Then, Claire and Eve swap their gifts. Then, Claire and Eve discuss something. Then, Claire and Eve swap their gifts. Then, Gertrude and Dave swap their gifts. Then, Dave and Gertrude swap their gifts. Then, Alice and Claire swap their gifts. Then, Claire and Dave swap their gifts. Then, Dave and Claire swap their gifts. Then, Claire and Alice swap their gifts. Then, nothing happens for a while. Then, nothing happens for a while. Then, nothing happens for a while. Then, Alice and Gertrude swap their gifts. Then, Alice and Gertrude discuss something. Then, Alice and Gertrude swap their gifts. Then, Alice and Claire swap their gifts. Then, Alice and Claire discuss something. Then, Alice and Claire swap their gifts. Then, Claire and Gertrude swap their gifts. Then, Claire and Gertrude discuss something. Then, Claire and Gertrude swap their gifts. Then, Bob and Claire swap their gifts. Then, Bob and Claire discuss something. Then, Bob and Claire swap their gifts. Then, Bob and Alice swap their gifts. Then, Bob and Alice discuss something. Then, Bob and Alice swap their gifts. Then, nothing happens for a while. Then, nothing happens for a while. Then, Alice and Fred swap their gifts. Then, Fred and Bob swap their gifts. Then, Bob and Fred swap their gifts. Then, Fred and Alice swap their gifts. Then, Claire and Gertrude swap their gifts. Then, Gertrude and Eve swap their gifts. Then, Eve and Gertrude swap their gifts. Then, Gertrude and Claire swap their gifts. Then, Claire and Dave swap their gifts. Then, Dave and Claire swap their gifts. Then, Dave and Gertrude swap their gifts. Then, Gertrude and Dave swap their gifts. Then, Claire and Gertrude swap their gifts. Then, Claire and Gertrude discuss something. Then, Claire and Gertrude swap their gifts. Then, Claire and Bob swap their gifts. Then, Bob and Fred swap their gifts. Finally, Claire and Gertrude swap their gifts. At the end of the event, Eve has the
Options:
(A) blue present
(B) black ball
(C) purple present
(D) pink ball
(E) green present
(F) orange ball
(G) yellow present

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Source and history

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