A man is walking towards an orange van.
A worker returns to his car.
A man walking towards a vehicle does not mean he is a worker.
exists e1 x1 x2 x3.(towards(e1,x2) & n_van(x2) & of(x2,x3) & n_orange(x3) & Actor(e1,x1) & v_walk(e1) & n_man(x1))
exists e1 x1 x2.(to(e1,x2) & n_car(x2) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_return(e1) & n_worker(x1))