Two men talk while sitting on a park bench.
The two women sat on the bench quietly.
two men is contradictory to two women
exists e1 e2 x1 x2 x3.(while(e1,e2) & on(e2,x2) & n_bench(x2) & of(x2,x3) & n_park(x3) & Actor(e2,x1) & v_sit(e2) & Actor(e1,x1) & v_talk(e1) & n_man(x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(n_bench(x2) & n_woman(x1) & card_eq_2(x1) & a_quietly(s1) & Manner(e1,s1) & on(e1,x2) & Actor(e1,x1) & v_sit(e1))