Three people are on a dark stage playing music with instruments.
There is a trio of people playing music on a dark stage.
The trio is a group of three people playing music on a dark stage.
exists p1 x1.(exists e1 s1 x2 x3 x4 x5.(on(x1,x2) & with(e1,x5) & n_instrument(x5) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & n_music(x4) & (x2 = x3) & n_stage(x2) & a_dark(s1) & Theme(s1,x2)) & n_people(x1) & card_eq_3(x1))
exists p1 x1 e1 s1 x2 x3 x4 x5 x6.((x1 = x2) & of(x2,x3) & on(e1,x6) & n_stage(x6) & a_dark(s1) & Theme(s1,x6) & Theme(e1,x5) & Actor(e1,x4) & v_play(e1) & n_music(x5) & (x3 = x4) & n_people(x3) & n_trio(x2))