Three men play guitars on stage.
Men play folk songs with their guitars.
Their music could be Country instead of folk.
exists e1 x1 x2 x3.(on(e1,x3) & n_stage(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & n_man(x1) & card_eq_3(x1))
exists x1 x2 x3 x4.(a_topic(x1) & with(x1,x4) & n_guitar(x4) & of(x4,x1) & n_thing(x1) & n_folk(x1) & Time(x1,x3) & n_song(x3) & n_play(x1) & of(x1,x2) & n_man(x2))