A butterfly was offered a cookie on the rock by a boy .
* rock ( x _ 8 ) ; butterfly ( x _ 1 ) AND offer . recipient ( x _ 3 , x _ 1 ) AND offer . theme ( x _ 3 , x _ 5 ) AND offer . agent ( x _ 3 , x _ 11 ) AND cookie ( x _ 5 ) AND cookie . nmod . on ( x _ 5 , x _ 8 ) AND boy ( x _ 11 )