Teenagers play in shopping carts of a rooftop.
Teenagers are reading in the park
either the teenagers are reading or playing with carts
exists e1 x1 x2 x3 x4.(in(e1,x2) & of(x2,x4) & n_rooftop(x4) & n_cart(x2) & of(x2,x3) & n_shopping(x3) & Actor(e1,x1) & v_play(e1) & n_teenager(x1))
exists e1 x1 x2.(n_park(x2) & in(e1,x2) & Actor(e1,x1) & v_read(e1) & n_teenager(x1))