A crowd watches a performance.
The crowd is wathing something.
If a crowd watches you can say they are watching
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_performance(x2) & n_crowd(x1))
exists e1 x1 x2.(n_crowd(x1) & Theme(e1,x2) & Actor(e1,x1) & v_wathe(e1) & n_thing(x2))