Ava proved that Emma tolerated that Hazel investigated the potato .
* potato ( x _ 9 ) ; prove . agent ( x _ 1 , Ava ) AND prove . ccomp ( x _ 1 , x _ 4 ) AND tolerate . agent ( x _ 4 , Emma ) AND tolerate . ccomp ( x _ 4 , x _ 7 ) AND investigate . agent ( x _ 7 , Hazel ) AND investigate . theme ( x _ 7 , x _ 9 )