the commodity does suspend Volgograd.
sent1: the commodity suspends Volgograd if something that does suspend vetch is not a kind of a Kendrew. sent2: the pianist does suspend vetch but it is not a Kendrew if there is something such that it does notch tax. sent3: there exists something such that it notches tax.
sent3 & sent2 -> int1: the pianist does suspend vetch and is not a kind of a Kendrew.; int1 -> int2: something suspends vetch but it is not a Kendrew.; int2 & sent1 -> hypothesis;
$hypothesis$ = the commodity does suspend Volgograd. ; $context$ = sent1: the commodity suspends Volgograd if something that does suspend vetch is not a kind of a Kendrew. sent2: the pianist does suspend vetch but it is not a Kendrew if there is something such that it does notch tax. sent3: there exists something such that it notches tax. ; $proof$ = 
sent3 & sent2 -> int1: the pianist does suspend vetch and is not a kind of a Kendrew.; int1 -> int2: something suspends vetch but it is not a Kendrew.; int2 & sent1 -> hypothesis; __PROVED__