that there exists something such that if the fact that it is not unreal and not mammalian is false it is forehand does not hold.
sent1: if the fact that the butler is unreal but it is not mammalian is wrong that it is a forehand is correct. sent2: if the butler is substantial thing that is not mammalian it is a forehand. sent3: there is something such that if the fact that it is unreal and not mammalian is false then the fact that it is forehand is true. sent4: if that the butler is not unreal and is non-mammalian is not correct then it is forehand. sent5: there is something such that if that the fact that it is not unreal and is mammalian is not wrong is not correct that it is not a forehand does not hold.
sent4 -> hypothesis;
$hypothesis$ = that there exists something such that if the fact that it is not unreal and not mammalian is false it is forehand does not hold. ; $context$ = sent1: if the fact that the butler is unreal but it is not mammalian is wrong that it is a forehand is correct. sent2: if the butler is substantial thing that is not mammalian it is a forehand. sent3: there is something such that if the fact that it is unreal and not mammalian is false then the fact that it is forehand is true. sent4: if that the butler is not unreal and is non-mammalian is not correct then it is forehand. sent5: there is something such that if that the fact that it is not unreal and is mammalian is not wrong is not correct that it is not a forehand does not hold. ; $proof$ = 
sent4 -> hypothesis; __DISPROVED__