The cat believed that the squirrel was returned the donut beside the boat by a teacher .
* cat ( x _ 1 ) ; * squirrel ( x _ 5 ) ; * donut ( x _ 9 ) ; * boat ( x _ 12 ) ; believe . agent ( x _ 2 , x _ 1 ) AND believe . ccomp ( x _ 2 , x _ 7 ) AND return . recipient ( x _ 7 , x _ 5 ) AND return . theme ( x _ 7 , x _ 9 ) AND return . agent ( x _ 7 , x _ 15 ) AND donut . nmod . beside ( x _ 9 , x _ 12 ) AND teacher ( x _ 15 )