that the feat does not occur and/or that the nosediving does not occur is caused by that the plonk happens.
sent1: the feat does not occur if both the straightening ogress and the plonk happens.
$hypothesis$ = that the feat does not occur and/or that the nosediving does not occur is caused by that the plonk happens. ; $context$ = sent1: the feat does not occur if both the straightening ogress and the plonk happens. ; $proof$ = 
__UNKNOWN__