if the hall is cephalic then that the opera does not decrease fester but it decreases airstream is not right.
sent1: if the opera is cephalic then it decreases airstream. sent2: that the opera is cephalic is not incorrect if it does decrease airstream. sent3: if the hall rats that the opera does not decrease fester and does decrease airstream does not hold. sent4: that the opera is cephalic and it is a rat is wrong if the hall decreases fester. sent5: the fact that the hall decreases airstream and it is a kind of a debt does not hold. sent6: the grandson decreases fester. sent7: the opera does not decrease fester and decreases airstream if the hall is a rat. sent8: if that the opera does decrease fester is right then the hall decreases airstream. sent9: if the hall is not a shrillness the anopheline decreases airstream and is cephalic. sent10: that that the opera does decrease fester and it decreases airstream is not correct is correct. sent11: the opera does not decrease fester and decreases airstream. sent12: if the hall is cephalic that the fact that that the opera decreases fester and it does decrease airstream hold does not hold is true. sent13: if the hall rats then the fact that the opera does decrease fester and it does decrease airstream is not correct. sent14: if the opera decreases fester then the fact that the hall does decrease airstream and is a rat is incorrect. sent15: the opera does not decrease fester but it decreases airstream if the hall is cephalic. sent16: the opera does decrease fester and it is abbatial if it does not enfeoff weave. sent17: the hall is a shrillness if it is cephalic.
void -> assump1: Let's assume that the hall is cephalic.; sent17 & assump1 -> int1: the hall is a kind of a shrillness.;
the neencephalon is a rat.
$hypothesis$ = if the hall is cephalic then that the opera does not decrease fester but it decreases airstream is not right. ; $context$ = sent1: if the opera is cephalic then it decreases airstream. sent2: that the opera is cephalic is not incorrect if it does decrease airstream. sent3: if the hall rats that the opera does not decrease fester and does decrease airstream does not hold. sent4: that the opera is cephalic and it is a rat is wrong if the hall decreases fester. sent5: the fact that the hall decreases airstream and it is a kind of a debt does not hold. sent6: the grandson decreases fester. sent7: the opera does not decrease fester and decreases airstream if the hall is a rat. sent8: if that the opera does decrease fester is right then the hall decreases airstream. sent9: if the hall is not a shrillness the anopheline decreases airstream and is cephalic. sent10: that that the opera does decrease fester and it decreases airstream is not correct is correct. sent11: the opera does not decrease fester and decreases airstream. sent12: if the hall is cephalic that the fact that that the opera decreases fester and it does decrease airstream hold does not hold is true. sent13: if the hall rats then the fact that the opera does decrease fester and it does decrease airstream is not correct. sent14: if the opera decreases fester then the fact that the hall does decrease airstream and is a rat is incorrect. sent15: the opera does not decrease fester but it decreases airstream if the hall is cephalic. sent16: the opera does decrease fester and it is abbatial if it does not enfeoff weave. sent17: the hall is a shrillness if it is cephalic. ; $proof$ = 
void -> assump1: Let's assume that the hall is cephalic.; sent17 & assump1 -> int1: the hall is a kind of a shrillness.; __UNKNOWN__