A crowd watches an outdoor concert.
A group of people is watching a performance.
A crowd is a group of people, and a concert is an example of a performance.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_concert(x2) & a_outdoor(s1) & Theme(s1,x2) & n_crowd(x1))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_watch(e1) & n_performance(x3) & of(x1,x2) & n_people(x2) & n_group(x1))