A very crowded city street.
A crowd forms to celebrate.
We can't say that they celebrate; they may just be walking.
exists s1 x1 x2.(a_topic(x1) & n_street(x1) & of(x1,x2) & n_city(x2) & a_crowded(s1) & Theme(s1,x1) & r_very(x1))
exists p1 x1 x2.(a_topic(x1) & Topic(x1,p1) & exists e1.(Actor(e1,x1) & v_celebrate(e1)) & n_form(x1) & of(x1,x2) & n_crowd(x2))