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BIG-Bench Hard / Here comes a perfectly valid argument: To begin with, being an ex-supporter of…

Problem

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input

"Here comes a perfectly valid argument: To begin with, being an ex-supporter of Vitória SC is necessary for being an opponent to SønderjyskE. Moreover, whoever is neither a backer of PAOK FC nor an ex-supporter of Lyngby BK is a backer of Everton FC or an opponent to SønderjyskE.finally, every backer of Everton FC is an ex-supporter of Vitória SC. In consequence, whoever is not an ex-supporter of Vitória SC is however a backer of PAOK FC or an ex-supporter of Lyngby BK."
Is the argument, given the explicitly stated premises, deductively valid or invalid?
Options:
- valid 
- invalid

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Source and history

task_id
1d2beba6-91c9-525e-b3c1-e7abd7afa67d
task_key
formal~5ffallacies--main--1d2beba6-91c9-525e-b3c1-e7abd7afa67d
task_revision_id
1
config / split
formal_fallacies / main

Official source

initial import