A child sits in a plastic toy car.
The car is a pedal car.
Not every plastic toy car that a child may sit in is a pedal car.
exists e1 s1 x1 x2 x3.(in(e1,x2) & n_car(x2) & of(x2,x3) & n_toy(x3) & a_plastic(s1) & Theme(s1,x2) & Actor(e1,x1) & v_sit(e1) & n_child(x1))
exists p1 x1.(n_car(x1) & exists s1 x2.((x1 = x2) & n_car(x2) & a_pedal(s1) & Theme(s1,x2)))