Two teenage boys and one teenage girl sitting on the steps of a pool or canal.
A teenage couple and their friend sit on the edge of the pool.
Two teenage boys and one teenage girl do not necessarily make a couple or friends.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(n_step(x6) & a_topic(s1) & subset_of(x3,s1) & on(e1,x6) & of(x6,x7) & (n_pool(x7) | n_canal(x7)) & Actor(e1,x5) & v_sit(e1) & (x3 = x5) & n_girl(x3) & of(x3,x4) & n_teenage(x4) & card_eq_1(x3) & subset_of(x1,s1) & n_boy(x1) & of(x1,x2) & n_teenage(x2) & card_eq_2(x1))
exists e1 x1 x2 x3 x4 x5 x6.(n_pool(x6) & n_edge(x5) & on(e1,x5) & of(x5,x6) & Actor(e1,x1) & v_sit(e1) & subset_of(x4,x1) & n_friend(x4) & of(x4,x2) & n_thing(x2) & subset_of(x2,x1) & n_couple(x2) & of(x2,x3) & n_teenage(x3))