there is something such that if it is not a shirtmaker then it is a Ichthyosauridae.
sent1: if the blueberry is not a kind of a shirtmaker it is a Ichthyosauridae.
sent1 -> hypothesis;
$hypothesis$ = there is something such that if it is not a shirtmaker then it is a Ichthyosauridae. ; $context$ = sent1: if the blueberry is not a kind of a shirtmaker it is a Ichthyosauridae. ; $proof$ = 
sent1 -> hypothesis; __PROVED__