three young girls learn ballet.
Three children learning to dance.
Girls are learning to dance ballet.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_learn(e1) & n_ballet(x2) & n_girl(x1) & a_young(s1) & Theme(s1,x1) & card_eq_3(x1))
exists e1 p1 x1 x2.(a_topic(x1) & Topic(e1,p1) & Actor(e1,x2) & v_learn(e1) & exists e2.(Actor(e2,x2) & v_dance(e2)) & (x1 = x2) & n_child(x1) & card_eq_3(x1))