some people riding an old bus
the people ride a bike
A bus is a different mode of transportation than a bike.
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_bus(x3) & a_old(s1) & Theme(s1,x3) & (x1 = x2) & n_people(x1))
exists e1 x1 x2.(n_people(x1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2))