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BIG-Bench Hard / It is not always easy to grasp who is consuming which products. The following…

Problem

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input

"It is not always easy to grasp who is consuming which products. The following argument pertains to this question: First of all, being a frequent consumer of KMS shampoo is necessary for being a regular consumer of Yardley London soap. Next, whoever is a regular user of Joico shampoo is not a frequent consumer of KMS shampoo. All this entails that no regular consumer of Yardley London soap is a regular user of Joico shampoo."
Is the argument, given the explicitly stated premises, deductively valid or invalid?
Options:
- valid 
- invalid

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Source and history

task_id
5a96ac38-e9cd-5c21-bc14-4d88c68b0db2
task_key
formal~5ffallacies--main--5a96ac38-e9cd-5c21-bc14-4d88c68b0db2
task_revision_id
1
config / split
formal_fallacies / main

Official source

initial import