An overweight couple walk down the street.
The people are standing for bus.
People cannot be standing and walking at the same time.
exists s1 x1 x2 x3.(n_street(x3) & a_topic(x1) & down(x1,x3) & n_walk(x1) & of(x1,x2) & n_couple(x2) & a_overweight(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_people(x1) & for(e1,x2) & n_bus(x2) & Actor(e1,x1) & v_stand(e1))