the fact that the Federal is a responsibility and it is phosphorous is incorrect.
sent1: that the Federal is phosphorous is correct. sent2: the Federal is a responsibility.
sent2 & sent1 -> hypothesis;
$hypothesis$ = the fact that the Federal is a responsibility and it is phosphorous is incorrect. ; $context$ = sent1: that the Federal is phosphorous is correct. sent2: the Federal is a responsibility. ; $proof$ = 
sent2 & sent1 -> hypothesis; __DISPROVED__