Four boys play on a merry-go-round at a park.
children are spinning fast
Just because the boys are playing on the merry go round, does not mean they are definitely spinning fast.
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 e1 s1 x1.(a_fast(s1) & Manner(e1,s1) & Actor(e1,x1) & v_spin(e1) & n_child(x1))