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BIG-Bench Hard / Here comes a perfectly valid argument: First of all, there is somebody who is a…

Problem

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input

"Here comes a perfectly valid argument: First of all, there is somebody who is a half-brother of Felipe and a brother of Harvey. Next, no workmate of Gary who is a nephew of Perry is a brother of Harvey. Hence, some half-brother of Felipe is not a nephew of Perry or not a workmate of Gary."
Is the argument, given the explicitly stated premises, deductively valid or invalid?
Options:
- valid 
- invalid

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Source and history

task_id
7d5b52d7-8c47-5e19-8392-d2c377a78efb
task_key
formal~5ffallacies--main--7d5b52d7-8c47-5e19-8392-d2c377a78efb
task_revision_id
1
config / split
formal_fallacies / main

Official source

initial import