A cat said that the jigsaw was changed by Emma .
* jigsaw ( x _ 5 ) ; cat ( x _ 1 ) AND say . agent ( x _ 2 , x _ 1 ) AND say . ccomp ( x _ 2 , x _ 7 ) AND change . theme ( x _ 7 , x _ 5 ) AND change . agent ( x _ 7 , Emma )