there exists something such that if it is a shrimp and it is not a seigniory it does not ventilate crutch.
sent1: the PET does not ventilate crutch if it does shrimp and it is not a seigniory. sent2: the PET does not ventilate crutch if it is a shrimp and it is a seigniory. sent3: there exists something such that if it is a kind of a shrimp that is a seigniory it does not ventilate crutch. sent4: that the PET ventilates crutch is not false if it is both a shrimp and not a seigniory. sent5: there exists something such that if it shrimps and it is not a seigniory then it does ventilate crutch.
sent1 -> hypothesis;
$hypothesis$ = there exists something such that if it is a shrimp and it is not a seigniory it does not ventilate crutch. ; $context$ = sent1: the PET does not ventilate crutch if it does shrimp and it is not a seigniory. sent2: the PET does not ventilate crutch if it is a shrimp and it is a seigniory. sent3: there exists something such that if it is a kind of a shrimp that is a seigniory it does not ventilate crutch. sent4: that the PET ventilates crutch is not false if it is both a shrimp and not a seigniory. sent5: there exists something such that if it shrimps and it is not a seigniory then it does ventilate crutch. ; $proof$ = 
sent1 -> hypothesis; __PROVED__