A large crowd of people are walking.
The people are in a parade.
Not all people in a parade are in a large crowd
exists e1 s1 x1 x2.(Actor(e1,x1) & v_walk(e1) & of(x1,x2) & n_people(x2) & n_crowd(x1) & a_large(s1) & Theme(s1,x1))
exists p1 x1.(n_people(x1) & exists x2.(in(x1,x2) & n_parade(x2)))