A guitar band is playing on stage.
There is a famous band performing
People playing onstage does not mean they are a famous band.
exists e1 x1 x2 x3.(on(e1,x3) & n_stage(x3) & Actor(e1,x1) & v_play(e1) & n_band(x1) & of(x1,x2) & n_guitar(x2))
exists p1 x1 e1 s1 x2 x3.((x1 = x2) & Actor(e1,x3) & v_perform(e1) & (x2 = x3) & n_band(x2) & a_famous(s1) & Theme(s1,x2))