Rock band performing live on stage, with a big star on stage.
A band member is playing guitar.
Just because its a rock band does not mean it has a guitar.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6.(a_topic(x1) & with(e1,x5) & on(x5,x6) & n_stage(x6) & n_star(x5) & a_big(s2) & Theme(s2,x5) & on(e1,x4) & n_stage(x4) & a_live(s1) & Manner(e1,s1) & Actor(e1,x3) & v_perform(e1) & (x1 = x3) & n_band(x1) & (x1 = x2) & ne_per_rock(x2))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_guitar(x3) & n_member(x1) & of(x1,x2) & n_band(x2))