A monster thought that a sandwich was rolled by a prisoner .
monster ( x _ 1 ) AND think . agent ( x _ 2 , x _ 1 ) AND think . ccomp ( x _ 2 , x _ 7 ) AND sandwich ( x _ 5 ) AND roll . theme ( x _ 7 , x _ 5 ) AND roll . agent ( x _ 7 , x _ 10 ) AND prisoner ( x _ 10 )