A man helps a boy steer a go-cart.
Two young girls stealing a go-cart.
Two people can not be a man and a boy and two young girls at the same time.
exists e1 e2 x1 x2 x3 x4.(Theme(e2,x4) & Actor(e2,x1) & v_steer(e2) & n_go-cart(x4) & Theme(e1,x3) & Actor(e1,x2) & v_help(e1) & n_boy(x3) & (x1 = x2) & n_man(x1))
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_steal(e1) & n_go-cart(x3) & (x1 = x2) & n_girl(x1) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1))