The boy offered a block in a van to the frog .
* boy ( x _ 1 ) ; * frog ( x _ 10 ) ; offer . agent ( x _ 2 , x _ 1 ) AND offer . theme ( x _ 2 , x _ 4 ) AND offer . recipient ( x _ 2 , x _ 10 ) AND block ( x _ 4 ) AND block . nmod . in ( x _ 4 , x _ 7 ) AND van ( x _ 7 )