The lead guitarist is playing on stage.
The guy is competing in a band competition.
The lead guitarist is playing on stage does not indicate he is competing in a band competition
exists e1 x1 x2 x3.(n_guitarist(x1) & of(x1,x2) & n_lead(x2) & on(e1,x3) & n_stage(x3) & Actor(e1,x1) & v_play(e1))
exists e1 x1 x2 x3.(n_guy(x1) & in(e1,x2) & n_competition(x2) & of(x2,x3) & n_band(x3) & Actor(e1,x1) & v_compete(e1))