A band is playing on stage.
A band refuses to play together.
A band cannot simultaneously be playing on stage and refuse to play together.
exists e1 x1 x2.(on(e1,x2) & n_stage(x2) & Actor(e1,x1) & v_play(e1) & n_band(x1))
exists e1 p1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_refuse(e1) & exists e2 s1.(a_together(s1) & Manner(e2,s1) & Actor(e2,x1) & v_play(e2)) & n_band(x1))