The baby proved that the cake was rolled by the bear .
* baby ( x _ 1 ) ; * cake ( x _ 5 ) ; * bear ( x _ 10 ) ; prove . agent ( x _ 2 , x _ 1 ) AND prove . ccomp ( x _ 2 , x _ 7 ) AND roll . theme ( x _ 7 , x _ 5 ) AND roll . agent ( x _ 7 , x _ 10 )