Four teenagers having a blast in a basement playing the video game Rock Band.
Teens challenging each other with Beatles songs.
Teenagers playing the video game Rock Band aren't always challenging each other with Beatles songs.
exists e1 e2 x1 x2 x3 x4 x5 x6 x7 x8 x9.(ne_per_band(x6) & (x6 = x9) & ne_per_rock(x9) & of(x6,x8) & n_game(x8) & of(x6,x7) & n_video(x7) & a_topic(x1) & Theme(e2,x3) & Actor(e2,x2) & v_have(e2) & in(x3,x4) & Theme(e1,x6) & Actor(e1,x5) & v_play(e1) & (x4 = x5) & n_basement(x4) & n_blast(x3) & (x1 = x2) & n_teenager(x1) & card_eq_4(x1))
exists x1 x2.(a_topic(x1) & all x3.(n_other(x3) -> exists e1 x4 x5.(with(e1,x4) & n_song(x4) & (x4 = x5) & ne_org_beatles(x5) & Theme(e1,x3) & Actor(e1,x2) & v_challenge(e1))) & (x1 = x2) & n_teens(x1))