A boy gave the monster a ball on the pillow .
* monster ( x _ 4 ) ; * pillow ( x _ 9 ) ; boy ( x _ 1 ) AND give . agent ( x _ 2 , x _ 1 ) AND give . recipient ( x _ 2 , x _ 4 ) AND give . theme ( x _ 2 , x _ 6 ) AND ball ( x _ 6 ) AND ball . nmod . on ( x _ 6 , x _ 9 )