The girl stabbed the sweetcorn on the towel .
* girl ( x _ 1 ) ; * sweetcorn ( x _ 4 ) ; * towel ( x _ 7 ) ; stab . agent ( x _ 2 , x _ 1 ) AND stab . theme ( x _ 2 , x _ 4 ) AND sweetcorn . nmod . on ( x _ 4 , x _ 7 )