A large crowd of people are walking.
A large crowd of people are marching in protest.
Not all large crowd of people walking are marching in protest.
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 e1 s1 x1 x2 x3.(in(e1,x3) & n_protest(x3) & Actor(e1,x1) & v_march(e1) & of(x1,x2) & n_people(x2) & n_crowd(x1) & a_large(s1) & Theme(s1,x1))