Two boys are playing in a sprinkler.
There are two boys
Sentence two erases the details of what the two boys are doing.
exists e1 x1 x2.(in(e1,x2) & n_sprinkler(x2) & Actor(e1,x1) & v_play(e1) & n_boy(x1) & card_eq_2(x1))
exists p1 x1 x2.((x1 = x2) & n_boy(x2) & card_eq_2(x2))