the petiolule is not a kind of a spathiphyllum.
sent1: that the petiolule does demise skilled is correct. sent2: that the petiolule is a gymnosperm is true. sent3: That the skilled does demise petiolule is correct.
sent1 & sent2 -> int1: the petiolule demises skilled and it is a gymnosperm.;
$hypothesis$ = the petiolule is not a kind of a spathiphyllum. ; $context$ = sent1: that the petiolule does demise skilled is correct. sent2: that the petiolule is a gymnosperm is true. sent3: That the skilled does demise petiolule is correct. ; $proof$ = 
sent1 & sent2 -> int1: the petiolule demises skilled and it is a gymnosperm.; __UNKNOWN__