Four people are walking on a sidewalk.
A crowd is standing at the bus stop.
There can either be four people or a crowd.
exists e1 x1 x2.(on(e1,x2) & n_sidewalk(x2) & Actor(e1,x1) & v_walk(e1) & n_people(x1) & card_eq_4(x1))
exists e1 x1 x2 x3.(n_stop(x2) & of(x2,x3) & n_bus(x3) & at(e1,x2) & Actor(e1,x1) & v_stand(e1) & n_crowd(x1))