Four people taking in front of a bus.
People were talking in front of the bus
in a both sentence four people and prople is different
exists e1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x3) & of(x3,x4) & n_bus(x4) & n_front(x3) & Actor(e1,x2) & v_take(e1) & (x1 = x2) & n_people(x1) & card_eq_4(x1))
exists e1 x1 x2 x3.(n_bus(x3) & in(e1,x2) & of(x2,x3) & n_front(x2) & Actor(e1,x1) & v_talk(e1) & n_people(x1))