Emma nursed the sandwich in a envelope on the seat .
* sandwich ( x _ 3 ) ; * seat ( x _ 9 ) ; nurse . agent ( x _ 1 , Emma ) AND nurse . theme ( x _ 1 , x _ 3 ) AND sandwich . nmod . in ( x _ 3 , x _ 6 ) AND envelope ( x _ 6 ) AND envelope . nmod . on ( x _ 6 , x _ 9 )