two youths eating on a bench.
Two youths eating.
youths eating is same as youths eating
exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_bench(x3) & Actor(e1,x2) & v_eat(e1) & (x1 = x2) & n_youth(x1) & card_eq_2(x1))
exists e1 x1.(Actor(e1,x1) & v_eat(e1) & n_youth(x1) & card_eq_2(x1))