the glass-cutter is not a letters.
sent1: the glass-cutter is not a letters if it tribulates stagecraft and it is main. sent2: something is not a letters if it is a kind of an elective and it is a mail. sent3: the ornithologist is a humaneness and it is a Croatian. sent4: the glucosamine is elective. sent5: the glass-cutter is a kind of an elective and it is a mail. sent6: if the slash is a refractivity and it is an elective that it does not announce reflexivity hold. sent7: an incomprehensible thing that clamors rhumb is not a Liston. sent8: the glass-cutter monopolizes arresting and it tribulates monologist.
sent2 -> int1: the glass-cutter is not a letters if it is elective thing that is a mail.; int1 & sent5 -> hypothesis;
$hypothesis$ = the glass-cutter is not a letters. ; $context$ = sent1: the glass-cutter is not a letters if it tribulates stagecraft and it is main. sent2: something is not a letters if it is a kind of an elective and it is a mail. sent3: the ornithologist is a humaneness and it is a Croatian. sent4: the glucosamine is elective. sent5: the glass-cutter is a kind of an elective and it is a mail. sent6: if the slash is a refractivity and it is an elective that it does not announce reflexivity hold. sent7: an incomprehensible thing that clamors rhumb is not a Liston. sent8: the glass-cutter monopolizes arresting and it tribulates monologist. ; $proof$ = 
sent2 -> int1: the glass-cutter is not a letters if it is elective thing that is a mail.; int1 & sent5 -> hypothesis; __PROVED__