An orange charter bus at a street crossing that advertises easy Bus.co.uk.
A car full of children.
A bus is different from a car.
(x)
exists s1 x1 x2 x3.(a_topic(x1) & of(s1,x3) & n_child(x3) & Theme(s1,x2) & a_full(s1) & (x1 = x2) & n_car(x1))