a man stands next to a bus.
The man is waiting to get on the bus.
A man next to a bus is not necessarily waiting to get on it,
exists e1 p1 x1.(exists s1 x2.(to(s1,x2) & n_bus(x2) & Theme(s1,x1) & a_next(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists e1 p1 x1 x2.(n_bus(x2) & n_man(x1) & Topic(e1,p1) & Actor(e1,x1) & v_wait(e1) & exists e2.(on(e2,x2) & Actor(e2,x1) & v_get(e2)))