The mouse meant that the moose helped a cake .
* mouse ( x _ 1 ) ; * moose ( x _ 5 ) ; mean . agent ( x _ 2 , x _ 1 ) AND mean . ccomp ( x _ 2 , x _ 6 ) AND help . agent ( x _ 6 , x _ 5 ) AND help . theme ( x _ 6 , x _ 8 ) AND cake ( x _ 8 )