A zebra confessed that a cake was given to Liam by the frog .
* frog ( x _ 12 ) ; zebra ( x _ 1 ) AND confess . agent ( x _ 2 , x _ 1 ) AND confess . ccomp ( x _ 2 , x _ 7 ) AND cake ( x _ 5 ) AND give . theme ( x _ 7 , x _ 5 ) AND give . recipient ( x _ 7 , Liam ) AND give . agent ( x _ 7 , x _ 12 )