A tourist promised a boy the cake beside the key .
* cake ( x _ 6 ) ; * key ( x _ 9 ) ; tourist ( x _ 1 ) AND promise . agent ( x _ 2 , x _ 1 ) AND promise . recipient ( x _ 2 , x _ 4 ) AND promise . theme ( x _ 2 , x _ 6 ) AND boy ( x _ 4 ) AND cake . nmod . beside ( x _ 6 , x _ 9 )