Spectators watch a classical music concert.
The spectators are watching something
If the people watch a concert, they are watching something.
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_concert(x2) & of(x2,x3) & n_music(x3) & a_classical(s1) & Theme(s1,x2) & n_spectator(x1))
exists e1 x1 x2.(n_spectator(x1) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_thing(x2))