Four girls crossing street.
The girls waited before crossing the street.
Four girls crossing street does not indicate they waited before crossing the street
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_cross(e1) & n_street(x3) & (x1 = x2) & n_girl(x1) & card_eq_4(x1))
exists e2 e1 x1 x2.(n_street(x2) & n_girl(x1) & before(e1,e2) & Theme(e2,x2) & Actor(e2,x1) & v_cross(e2) & Actor(e1,x1) & v_wait(e1))