A child is playing at a park.
The child is playing with his dinosaurs at the park.
playing doesn't imply  with his dinosaurs
exists e1 x1 x2.(at(e1,x2) & n_park(x2) & Actor(e1,x1) & v_play(e1) & n_child(x1))
exists e1 x1 x2 x3.(n_park(x3) & n_dinosaur(x2) & of(x2,x1) & n_male(x1) & n_child(x1) & with(e1,x2) & at(x2,x3) & Actor(e1,x1) & v_play(e1))