the knuckle is brimless.
sent1: if something is both non-legato and not brimless then the knuckle is Panamanian. sent2: the fact that if something that is not a Panamanian is not legato then the knuckle is brimless is not false. sent3: if there exists something such that it either is brimless or is not a Panamanian or both then the knuckle is not legato. sent4: the interreflection is not legato.
the knuckle is not legato.
$hypothesis$ = the knuckle is brimless. ; $context$ = sent1: if something is both non-legato and not brimless then the knuckle is Panamanian. sent2: the fact that if something that is not a Panamanian is not legato then the knuckle is brimless is not false. sent3: if there exists something such that it either is brimless or is not a Panamanian or both then the knuckle is not legato. sent4: the interreflection is not legato. ; $proof$ = 
__UNKNOWN__