A duck is standing on the street and the little boy is running toward it.
The boy is walking
Boys cannot be running and walking at the same time.
exists e1 e2 s1 x1 x2 x3.(n_thing(x2) & n_boy(x3) & a_little(s1) & Theme(s1,x3) & n_street(x2) & toward(e2,x2) & Actor(e2,x3) & v_run(e2) & on(e1,x2) & Actor(e1,x1) & v_stand(e1) & n_duck(x1))
exists e1 x1.(n_boy(x1) & Actor(e1,x1) & v_walk(e1))