that the catapult is not aeromechanic is true.
sent1: if something is peritoneal it is not aeromechanic. sent2: the cabaret is not aeromechanic if the catapult is soleless and it is aeromechanic. sent3: the catapult is soleless. sent4: if something is soleless or it is not a defenestration or both it is soleless. sent5: the catapult is soleless and aeromechanic if the ricin is not peritoneal. sent6: if something is peritoneal and/or is soleless it is not aeromechanic. sent7: if the ricin is a botanist either it is soleless or it is not a kind of a defenestration or both. sent8: the catapult is not aeromechanic if the fact that it is not non-peritoneal is true. sent9: something is not peritoneal if that it is a botanist and it is not a defenestration does not hold.
sent3 -> int1: the catapult is peritoneal and/or it is soleless.; sent6 -> int2: the catapult is not aeromechanic if it is peritoneal and/or it is soleless.; int1 & int2 -> hypothesis;
the fact that the catapult is aeromechanic is not false.
sent4 -> int3: if either the ricin is soleless or it is not a defenestration or both that it is soleless is not false.;
$hypothesis$ = that the catapult is not aeromechanic is true. ; $context$ = sent1: if something is peritoneal it is not aeromechanic. sent2: the cabaret is not aeromechanic if the catapult is soleless and it is aeromechanic. sent3: the catapult is soleless. sent4: if something is soleless or it is not a defenestration or both it is soleless. sent5: the catapult is soleless and aeromechanic if the ricin is not peritoneal. sent6: if something is peritoneal and/or is soleless it is not aeromechanic. sent7: if the ricin is a botanist either it is soleless or it is not a kind of a defenestration or both. sent8: the catapult is not aeromechanic if the fact that it is not non-peritoneal is true. sent9: something is not peritoneal if that it is a botanist and it is not a defenestration does not hold. ; $proof$ = 
sent3 -> int1: the catapult is peritoneal and/or it is soleless.; sent6 -> int2: the catapult is not aeromechanic if it is peritoneal and/or it is soleless.; int1 & int2 -> hypothesis; __PROVED__