Two young boys play besides a lake, throwing rocks into the water.
Two boys play outside by the lake.
the boys are young
exists e2 e1 s1 x1 x2 x3 x4.(n_water(x4) & for(e1,e2) & into(e2,x4) & Theme(e2,x3) & Actor(e2,x1) & v_throw(e2) & n_rock(x3) & besides(e1,x2) & n_lake(x2) & Actor(e1,x1) & v_play(e1) & n_boy(x1) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 x1 x2.(n_lake(x2) & by(e1,x2) & r_outside(e1) & Actor(e1,x1) & v_play(e1) & n_boy(x1) & card_eq_2(x1))