The boy ate a cockroach in the mug .
* boy ( x _ 1 ) ; * mug ( x _ 7 ) ; eat . agent ( x _ 2 , x _ 1 ) AND eat . theme ( x _ 2 , x _ 4 ) AND cockroach ( x _ 4 ) AND cockroach . nmod . in ( x _ 4 , x _ 7 )