Ava gave a block on a tripod to the duck .
* duck ( x _ 9 ) ; give . agent ( x _ 1 , Ava ) AND give . theme ( x _ 1 , x _ 3 ) AND give . recipient ( x _ 1 , x _ 9 ) AND block ( x _ 3 ) AND block . nmod . on ( x _ 3 , x _ 6 ) AND tripod ( x _ 6 )