A mother promised a cookie on the stage to a pig .
* stage ( x _ 7 ) ; mother ( x _ 1 ) AND promise . agent ( x _ 2 , x _ 1 ) AND promise . theme ( x _ 2 , x _ 4 ) AND promise . recipient ( x _ 2 , x _ 10 ) AND cookie ( x _ 4 ) AND cookie . nmod . on ( x _ 4 , x _ 7 ) AND pig ( x _ 10 )