that there exists something such that if it is not optical then it is not prenatal and it thrills lettercard is not right.
sent1: the sailmaker is not prenatal but it thrills lettercard if it is not optical.
sent1 -> hypothesis;
$hypothesis$ = that there exists something such that if it is not optical then it is not prenatal and it thrills lettercard is not right. ; $context$ = sent1: the sailmaker is not prenatal but it thrills lettercard if it is not optical. ; $proof$ = 
sent1 -> hypothesis; __DISPROVED__