that there exists something such that if it is not uneven and does leap oil it is not a kind of a canvasback does not hold.
sent1: if the bunker is even thing that does leap oil it is not a canvasback.
sent1 -> hypothesis;
$hypothesis$ = that there exists something such that if it is not uneven and does leap oil it is not a kind of a canvasback does not hold. ; $context$ = sent1: if the bunker is even thing that does leap oil it is not a canvasback. ; $proof$ = 
sent1 -> hypothesis; __DISPROVED__