A boy and a girl are standing on the edge of a lake at sunset.
The boy and girl are throwing rocks in the lake.
The boy and girl standing by the lake may not actually be throwing rocks in it.
exists e1 x1 x2 x3 x4 x5 x6.(n_edge(x4) & at(e1,x6) & n_sunset(x6) & on(e1,x4) & of(x4,x5) & n_lake(x5) & Actor(e1,x1) & v_stand(e1) & subset_of(x3,x1) & n_girl(x3) & subset_of(x2,x1) & n_boy(x2))
exists e1 x1 x2 x3 x4 x5.(n_lake(x5) & n_girl(x3) & n_boy(x2) & subset_of(x3,x1) & subset_of(x2,x1) & in(e1,x5) & Theme(e1,x4) & Actor(e1,x1) & v_throw(e1) & n_rock(x4))