Two children and a lady, one of the girls is crying.
A boy plays with his balloon.
The subject cannot be a boy and two children and a lady.
exists p1 s1 x1 x2 x4.(n_girl(x4) & a_topic(s1) & subset_of(x2,s1) & exists e1 x3.(Actor(e1,x3) & v_cry(e1) & of(x3,x4) & n_thing(x3) & card_eq_1(x3)) & that(x2,p1) & n_lady(x2) & subset_of(x1,s1) & n_child(x1) & card_eq_2(x1))
exists e1 x1 x2.(with(e1,x2) & n_balloon(x2) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_play(e1) & n_boy(x1))