People are crossing a city street intersection.
The people are skipping rocks at the beach.
Skipping is different than crossing.
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_cross(e1) & n_intersection(x2) & of(x2,x4) & n_street(x4) & of(x2,x3) & n_city(x3) & n_people(x1))
exists e1 x1 x2 x3.(n_beach(x3) & n_people(x1) & at(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_skip(e1) & n_rock(x2))