Boys playing baseball by the water.
A home run is hit during the baseball game.
People playing baseball do not always hit a home run.  They usually don't, in fact.
exists e1 x1 x2 x3 x4.(n_water(x4) & a_topic(x1) & by(e1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_baseball(x3) & (x1 = x2) & n_boy(x1))
exists e1 x1 x2 x3 x4.(n_game(x3) & of(x3,x4) & n_baseball(x4) & during(e1,x3) & Theme(e1,x1) & v_hit(e1) & n_run(x1) & of(x1,x2) & n_home(x2))