the fact that the portal is not pleasant hold.
sent1: if there is something such that it is a Oklahoman then the portal is graceful and/or does suggest Laburnum. sent2: the portal is graceful or it suggests Laburnum or both. sent3: everything is not a front. sent4: if the portal does not suggest Laburnum then it is not unpleasant. sent5: the portal is not non-graceful and/or it does not suggest Laburnum if something is a Oklahoman. sent6: if something is both tubeless and not a Oklahoman it is not pleasant. sent7: there is something such that it is a Oklahoman. sent8: something that does not suggest Laburnum is pleasant. sent9: the Mancunian is tubeless thing that is entomophilous. sent10: if something is graceful and/or does not suggest Laburnum then it is pleasant. sent11: if something is not a front it does not suggest flagellation and does not perseverate Mancunian. sent12: if there exists something such that it is pleasant or it is a tubeless or both then the precipice is not a Oklahoman. sent13: the forefather perseverates Mancunian and/or it does not suggest enactment.
sent10 -> int1: if the portal is graceful and/or it does not suggest Laburnum then it is pleasant.; sent7 & sent5 -> int2: the portal is graceful and/or it does not suggest Laburnum.; int1 & int2 -> hypothesis;
there is something such that it is a I.
sent9 -> int3: the Mancunian is a kind of a tubeless.; int3 -> int4: the Mancunian is pleasant and/or it is tubeless.; int4 -> int5: something is pleasant and/or it is not tubed.; int5 & sent12 -> int6: the precipice is not a Oklahoman.; int6 -> int7: something is not a Oklahoman.;
$hypothesis$ = the fact that the portal is not pleasant hold. ; $context$ = sent1: if there is something such that it is a Oklahoman then the portal is graceful and/or does suggest Laburnum. sent2: the portal is graceful or it suggests Laburnum or both. sent3: everything is not a front. sent4: if the portal does not suggest Laburnum then it is not unpleasant. sent5: the portal is not non-graceful and/or it does not suggest Laburnum if something is a Oklahoman. sent6: if something is both tubeless and not a Oklahoman it is not pleasant. sent7: there is something such that it is a Oklahoman. sent8: something that does not suggest Laburnum is pleasant. sent9: the Mancunian is tubeless thing that is entomophilous. sent10: if something is graceful and/or does not suggest Laburnum then it is pleasant. sent11: if something is not a front it does not suggest flagellation and does not perseverate Mancunian. sent12: if there exists something such that it is pleasant or it is a tubeless or both then the precipice is not a Oklahoman. sent13: the forefather perseverates Mancunian and/or it does not suggest enactment. ; $proof$ = 
sent10 -> int1: if the portal is graceful and/or it does not suggest Laburnum then it is pleasant.; sent7 & sent5 -> int2: the portal is graceful and/or it does not suggest Laburnum.; int1 & int2 -> hypothesis; __DISPROVED__