the fact that there is something such that if that it is not multilingual is correct it is not a coiffeuse and it is not leaning is not correct.
sent1: something is both a coiffeuse and not leaning if it is not multilingual. sent2: the fact that the windowsill does not lean if the windowsill is not multilingual is not incorrect. sent3: if something is not multilingual it is not a coiffeuse and it does not lean.
sent3 -> int1: the windowsill is both not a coiffeuse and not leaning if it is not multilingual.; int1 -> hypothesis;
$hypothesis$ = the fact that there is something such that if that it is not multilingual is correct it is not a coiffeuse and it is not leaning is not correct. ; $context$ = sent1: something is both a coiffeuse and not leaning if it is not multilingual. sent2: the fact that the windowsill does not lean if the windowsill is not multilingual is not incorrect. sent3: if something is not multilingual it is not a coiffeuse and it does not lean. ; $proof$ = 
sent3 -> int1: the windowsill is both not a coiffeuse and not leaning if it is not multilingual.; int1 -> hypothesis; __DISPROVED__