the ovenbird is aground.
sent1: the prowler does birdnest Passover. sent2: the promisee does not birdnest disrespect. sent3: something is aground if it is not unhealthy. sent4: if the promisee festoons August it birdnests Passover. sent5: the promisee festoons August. sent6: The August festoons promisee. sent7: the ovenbird is not unhealthy if something is a kind of a Cambrian but it is not a Argun. sent8: the ovenbird is not a kind of a Argun. sent9: the promisee does not birdnest Passover if the fact that it is a kind of a Cambrian and it is not a Argun does not hold.
void -> assump1: Let's assume that that the promisee is a Cambrian but not a Argun is not correct.; sent9 & assump1 -> int1: the promisee does not birdnest Passover.; sent4 & sent5 -> int2: the fact that the promisee birdnests Passover is not incorrect.; int1 & int2 -> int3: this is contradiction.; [assump1] & int3 -> int4: the promisee is a kind of a Cambrian but it is not a Argun.; int4 -> int5: something is a kind of a Cambrian that is not a Argun.; int5 & sent7 -> int6: the ovenbird is not unhealthy.; sent3 -> int7: if the ovenbird is healthy then it is aground.; int6 & int7 -> hypothesis;
$hypothesis$ = the ovenbird is aground. ; $context$ = sent1: the prowler does birdnest Passover. sent2: the promisee does not birdnest disrespect. sent3: something is aground if it is not unhealthy. sent4: if the promisee festoons August it birdnests Passover. sent5: the promisee festoons August. sent6: The August festoons promisee. sent7: the ovenbird is not unhealthy if something is a kind of a Cambrian but it is not a Argun. sent8: the ovenbird is not a kind of a Argun. sent9: the promisee does not birdnest Passover if the fact that it is a kind of a Cambrian and it is not a Argun does not hold. ; $proof$ = 
void -> assump1: Let's assume that that the promisee is a Cambrian but not a Argun is not correct.; sent9 & assump1 -> int1: the promisee does not birdnest Passover.; sent4 & sent5 -> int2: the fact that the promisee birdnests Passover is not incorrect.; int1 & int2 -> int3: this is contradiction.; [assump1] & int3 -> int4: the promisee is a kind of a Cambrian but it is not a Argun.; int4 -> int5: something is a kind of a Cambrian that is not a Argun.; int5 & sent7 -> int6: the ovenbird is not unhealthy.; sent3 -> int7: if the ovenbird is healthy then it is aground.; int6 & int7 -> hypothesis; __PROVED__