the confluence is caused by the brazening coupon.
sent1: the slugging Gasterosteus happens. sent2: if the pharmacologicalness happens then the confluence occurs. sent3: if the pharmacologicalness does not occur then the fact that the brazening coupon does not occur hold.
void -> assump1: Let's assume that the brazening coupon happens.; void -> assump2: Let's assume that the pharmacologicalness does not occur.; sent3 & assump2 -> int1: the brazening coupon does not occur.; assump1 & int1 -> int2: this is contradiction.; [assump2] & int2 -> int3: the pharmacologicalness occurs.; sent2 & int3 -> int4: the confluence happens.; [assump1] & int4 -> hypothesis;
$hypothesis$ = the confluence is caused by the brazening coupon. ; $context$ = sent1: the slugging Gasterosteus happens. sent2: if the pharmacologicalness happens then the confluence occurs. sent3: if the pharmacologicalness does not occur then the fact that the brazening coupon does not occur hold. ; $proof$ = 
void -> assump1: Let's assume that the brazening coupon happens.; void -> assump2: Let's assume that the pharmacologicalness does not occur.; sent3 & assump2 -> int1: the brazening coupon does not occur.; assump1 & int1 -> int2: this is contradiction.; [assump2] & int2 -> int3: the pharmacologicalness occurs.; sent2 & int3 -> int4: the confluence happens.; [assump1] & int4 -> hypothesis; __PROVED__