A young girl throwing a rock.
The girl is playing at the pond.
Throwing a rock does not imply  playing at the pond.
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_throw(e1) & n_rock(x3) & (x1 = x2) & n_girl(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_pond(x2) & n_girl(x1) & at(e1,x2) & Actor(e1,x1) & v_play(e1))