that the chaja is both not a backyard and a kainite is not right.
sent1: something is not a backyard if it is either archival or valvular or both. sent2: an archival thing is not a backyard but a kainite. sent3: if the jerkin is not a backyard then that the chaja is not a backyard but a kainite is not true.
sent1 -> int1: if the jerkin is archival or it is valvular or both then it is not a backyard.;
the chaja is not a backyard but it is a kainite.
sent2 -> int2: if the chaja is archival then it is not a backyard and is a kainite.;
$hypothesis$ = that the chaja is both not a backyard and a kainite is not right. ; $context$ = sent1: something is not a backyard if it is either archival or valvular or both. sent2: an archival thing is not a backyard but a kainite. sent3: if the jerkin is not a backyard then that the chaja is not a backyard but a kainite is not true. ; $proof$ = 
sent1 -> int1: if the jerkin is archival or it is valvular or both then it is not a backyard.; __UNKNOWN__