Crowd of people wearing blue standing on the street by buildings.
A group of cops wait for parade to start.
There is no way know whether a crown of people wearing blue on the street is a group of cops waiting for a parade to start.
exists e1 s1 x1 x2 x3 x4 x5 x6.(n_street(x5) & a_topic(x1) & of(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & by(x4,x6) & n_building(x6) & on(x4,x5) & n_standing(x4) & a_blue(s1) & Theme(s1,x4) & (x2 = x3) & n_people(x2) & n_crowd(x1))
exists e1 p1 x1 x2 x3.(for(e1,x3) & n_parade(x3) & Topic(e1,p1) & Actor(e1,x1) & v_wait(e1) & exists e2.(Actor(e2,x1) & v_start(e2)) & of(x1,x2) & n_cop(x2) & n_group(x1))