People in a crowded city street.
People gather outdoors.
Being in a city street means to be outdoors, and crowded street implies people are gathered together.
exists s1 x1 x2 x3.(a_topic(x1) & in(x1,x2) & n_street(x2) & of(x2,x3) & n_city(x3) & a_crowded(s1) & Theme(s1,x2) & n_people(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_gather(e1) & n_outdoors(x2) & n_people(x1))