Two teenage girls are standing on beside the beach listening to ipods.
Girls are trading songs
Not all girls trade songs.
exists e1 s1 s2 x1 x2 x3 x4.(n_listening(x2) & of(x2,x3) & n_beach(x3) & to(e1,x4) & n_ipod(x4) & beside(e1,x2) & a_on(s2) & Manner(e1,s2) & Actor(e1,x1) & v_stand(e1) & n_girl(x1) & a_teenage(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_trade(e1) & n_song(x2) & n_girl(x1))