The cow crumpled the biscuit on the stage .
* cow ( x _ 1 ) ; * biscuit ( x _ 4 ) ; * stage ( x _ 7 ) ; crumple . agent ( x _ 2 , x _ 1 ) AND crumple . theme ( x _ 2 , x _ 4 ) AND biscuit . nmod . on ( x _ 4 , x _ 7 )