the pinch is not benzylic.
sent1: if there exists something such that it is both not blastomeric and not disciplinary the pinch is benzylic. sent2: the isomer is not blastomeric and it is not disciplinary.
sent2 -> int1: there exists something such that it is not blastomeric and it is not disciplinary.; int1 & sent1 -> hypothesis;
$hypothesis$ = the pinch is not benzylic. ; $context$ = sent1: if there exists something such that it is both not blastomeric and not disciplinary the pinch is benzylic. sent2: the isomer is not blastomeric and it is not disciplinary. ; $proof$ = 
sent2 -> int1: there exists something such that it is not blastomeric and it is not disciplinary.; int1 & sent1 -> hypothesis; __DISPROVED__