People crossing the street.
People traveling on foot
Crossing is the same as traveling
exists e1 x1 x2 x3.(n_street(x3) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_cross(e1) & (x1 = x2) & n_people(x1))
exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_foot(x3) & Actor(e1,x2) & v_travel(e1) & (x1 = x2) & n_people(x1))