Four boys play on a merry-go-round at a park.
There are males playing outside.
Boys are males.
exists e1 x1 x2 x3.(at(e1,x3) & n_park(x3) & on(e1,x2) & n_merry-go-round(x2) & Actor(e1,x1) & v_play(e1) & n_boy(x1) & card_eq_4(x1))
exists p1 x1 e1 s1 x2 x3.((x1 = x2) & a_outside(s1) & Manner(e1,s1) & Actor(e1,x3) & v_play(e1) & (x2 = x3) & n_male(x2))