there exists something such that it does not pitch.
sent1: if something does not jellify khan and it is not a burette then it is not aeriferous. sent2: the Ingrian does not preempt stocked. sent3: if the fact that something is a chisel and it does pitch is wrong then it is not a chisel. sent4: the Ingrian does not circle if it does not jellify khan and does not jellify Klan. sent5: there exists something such that it does not preempt stocked. sent6: the Ingrian is not a Clay. sent7: the decoupage is not agricultural if it is not a jnd and it is not a memorial. sent8: that the Ingrian is not Brobdingnagian is true. sent9: something is not a Tenthredinidae if it is not a automysophobia and does not exceed lagoon. sent10: something that does not jellify posturer and does not drape portfolio does not exceed intermission. sent11: there exists something such that it is not hypothermic. sent12: the Ingrian is not a osteologist. sent13: the fact that the spine is not a memorial is correct. sent14: there exists something such that it does not exceed decasyllable. sent15: if something that is not a chisel is not a kind of a memorial it is not a pitch. sent16: the Ingrian is not a kind of a memorial. sent17: there exists something such that it is a kind of a pitch. sent18: the Ingrian does not jellify posturer.
sent15 -> int1: if the Ingrian is not a chisel and is not a memorial then it does not pitch.;
the posturer is not a kind of a chisel.
sent3 -> int2: if that the posturer is a chisel that does pitch is not true then it is not a chisel.;
$hypothesis$ = there exists something such that it does not pitch. ; $context$ = sent1: if something does not jellify khan and it is not a burette then it is not aeriferous. sent2: the Ingrian does not preempt stocked. sent3: if the fact that something is a chisel and it does pitch is wrong then it is not a chisel. sent4: the Ingrian does not circle if it does not jellify khan and does not jellify Klan. sent5: there exists something such that it does not preempt stocked. sent6: the Ingrian is not a Clay. sent7: the decoupage is not agricultural if it is not a jnd and it is not a memorial. sent8: that the Ingrian is not Brobdingnagian is true. sent9: something is not a Tenthredinidae if it is not a automysophobia and does not exceed lagoon. sent10: something that does not jellify posturer and does not drape portfolio does not exceed intermission. sent11: there exists something such that it is not hypothermic. sent12: the Ingrian is not a osteologist. sent13: the fact that the spine is not a memorial is correct. sent14: there exists something such that it does not exceed decasyllable. sent15: if something that is not a chisel is not a kind of a memorial it is not a pitch. sent16: the Ingrian is not a kind of a memorial. sent17: there exists something such that it is a kind of a pitch. sent18: the Ingrian does not jellify posturer. ; $proof$ = 
sent15 -> int1: if the Ingrian is not a chisel and is not a memorial then it does not pitch.; __UNKNOWN__