the fishbone is a softener.
sent1: the mullet is a revival. sent2: there is something such that it is autographic. sent3: if there is something such that it is autographic the mullet is a revival. sent4: the mullet lingers and it is a kind of a revival if something is autographic. sent5: if something does linger then it is intraventricular. sent6: the fishbone is not a softener if the mullet either is intraventricular or is celiac or both.
sent2 & sent4 -> int1: the mullet lingers and it is a kind of a revival.; int1 -> int2: the mullet does linger.; sent5 -> int3: the mullet is intraventricular if it does linger.; int2 & int3 -> int4: the mullet is intraventricular.; int4 -> int5: the mullet is intraventricular and/or it is not non-celiac.; int5 & sent6 -> hypothesis;
$hypothesis$ = the fishbone is a softener. ; $context$ = sent1: the mullet is a revival. sent2: there is something such that it is autographic. sent3: if there is something such that it is autographic the mullet is a revival. sent4: the mullet lingers and it is a kind of a revival if something is autographic. sent5: if something does linger then it is intraventricular. sent6: the fishbone is not a softener if the mullet either is intraventricular or is celiac or both. ; $proof$ = 
sent2 & sent4 -> int1: the mullet lingers and it is a kind of a revival.; int1 -> int2: the mullet does linger.; sent5 -> int3: the mullet is intraventricular if it does linger.; int2 & int3 -> int4: the mullet is intraventricular.; int4 -> int5: the mullet is intraventricular and/or it is not non-celiac.; int5 & sent6 -> hypothesis; __DISPROVED__