that there is something such that if it is not a kind of a undutifulness and is hydrodynamics then it is not vocational does not hold.
sent1: the histaminase is not vocational if it is a undutifulness and it is hydrodynamics. sent2: if the histaminase is not a undutifulness but it is hydrodynamics it is vocational. sent3: if the ligule is not atmospheric but it is vocational it is not a kind of a Douglass. sent4: there exists something such that if the fact that it is both not a undutifulness and hydrodynamics is not wrong then it is vocational. sent5: there exists something such that if it is a undutifulness and it is hydrodynamics the fact that it is not vocational hold. sent6: the histaminase is not vocational if it is not a undutifulness and it is hydrodynamics.
sent6 -> hypothesis;
$hypothesis$ = that there is something such that if it is not a kind of a undutifulness and is hydrodynamics then it is not vocational does not hold. ; $context$ = sent1: the histaminase is not vocational if it is a undutifulness and it is hydrodynamics. sent2: if the histaminase is not a undutifulness but it is hydrodynamics it is vocational. sent3: if the ligule is not atmospheric but it is vocational it is not a kind of a Douglass. sent4: there exists something such that if the fact that it is both not a undutifulness and hydrodynamics is not wrong then it is vocational. sent5: there exists something such that if it is a undutifulness and it is hydrodynamics the fact that it is not vocational hold. sent6: the histaminase is not vocational if it is not a undutifulness and it is hydrodynamics. ; $proof$ = 
sent6 -> hypothesis; __DISPROVED__