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BIG-Bench Hard / Is Fred a cousin of Robert? Is Joe related to Bob? In large families, it is…

Problem

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input

"Is Fred a cousin of Robert? Is Joe related to Bob? In large families, it is sometimes difficult to keep track of all one's relatives. The following argument seeks to clarify some such relations: To start with, it is not the case that Homer is a classmate of Frank. Now, being a classmate of Edward is necessary for being a classmate of Frank. So, necessarily, it is not the case that Homer is a classmate of Edward."
Is the argument, given the explicitly stated premises, deductively valid or invalid?
Options:
- valid 
- invalid

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Source and history

task_id
25d71072-51ee-53d6-9546-4e4e46545feb
task_key
formal~5ffallacies--main--25d71072-51ee-53d6-9546-4e4e46545feb
task_revision_id
1
config / split
formal_fallacies / main

Official source

initial import