A large crowd of people walk around on a busy street.
A crowd of protesters walk down the street.
A crowd does not have to be large or protesters.
exists e1 s1 s2 s3 x1 x2 x3.(on(e1,x3) & n_street(x3) & a_busy(s3) & Theme(s3,x3) & a_around(s2) & Manner(e1,s2) & Actor(e1,x1) & v_walk(e1) & of(x1,x2) & n_people(x2) & n_crowd(x1) & a_large(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(n_street(x3) & down(e1,x3) & Actor(e1,x1) & v_walk(e1) & of(x1,x2) & n_protester(x2) & n_crowd(x1))