A rock band plays for a crowd of people.
The band is playing to an empty room.
If a band plays for a crowd of people, then it is inaccurate to claim that the band is playing to an empty room.
exists e1 x1 x2 x3 x4.(for(e1,x3) & of(x3,x4) & n_people(x4) & n_crowd(x3) & Actor(e1,x1) & v_play(e1) & n_band(x1) & of(x1,x2) & n_rock(x2))
exists e1 s1 x1 x2.(n_band(x1) & to(e1,x2) & n_room(x2) & a_empty(s1) & Theme(s1,x2) & Actor(e1,x1) & v_play(e1))