Two children playing with an inflatable mattress.
Two children are playing.
Children playing do just that.
exists e1 s1 x1 x2 x3.(a_topic(x1) & with(e1,x3) & n_mattress(x3) & a_inflatable(s1) & Theme(s1,x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_child(x1) & card_eq_2(x1))
exists e1 x1.(Actor(e1,x1) & v_play(e1) & n_child(x1) & card_eq_2(x1))