three children playy together.
Three children are getting along.
Playing together usually requires getting along.
exists x1.(a_topic(x1) & n_playy(x1) & r_together(x1) & n_child(x1) & card_eq_3(x1))
exists e1 p1 x1.(exists s1.(Theme(s1,x1) & a_along(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_get(e1) & n_child(x1) & card_eq_3(x1))