Two people strolling behind a school bus.
Two people see kids on the bus.
We don't know if people see kids.
exists e1 x1 x2 x3 x4.(a_topic(x1) & behind(e1,x3) & n_bus(x3) & of(x3,x4) & n_school(x4) & Actor(e1,x2) & v_stroll(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_bus(x3) & Theme(e1,x2) & Actor(e1,x1) & v_see(e1) & on(x2,x3) & n_kid(x2) & n_people(x1) & card_eq_2(x1))