Two boys sand next to a drinking fountain in a park.
two boys play in a park
To play in the park indicates vague action as opposed to the specificity of standing next to a fountain.
exists x1 x2 x3 x4 x5 x6.(a_topic(x1) & to(x3,x4) & in(x4,x6) & n_park(x6) & n_fountain(x4) & of(x4,x5) & n_drinking(x5) & next(x1,x3) & n_thing(x3) & n_sand(x1) & of(x1,x2) & n_boy(x2) & card_eq_2(x1))
exists e1 x1 x2.(in(e1,x2) & n_park(x2) & Actor(e1,x1) & v_play(e1) & n_boy(x1) & card_eq_2(x1))