A little boy with an orange shirt is riding his blue and white toy car.
A child plays with a toy.
little boy  is riding his blue and white toy car simply means child plays with a toy
exists e1 s1 s2 s3 x1 x2 x3 x4 x5.(Theme(e1,x4) & Actor(e1,x1) & v_ride(e1) & n_car(x4) & of(x4,x5) & n_toy(x5) & a_white(s3) & Theme(s3,x4) & a_blue(s2) & Theme(s2,x4) & of(x4,x1) & n_male(x1) & with(x1,x2) & n_shirt(x2) & of(x2,x3) & n_orange(x3) & n_boy(x1) & a_little(s1) & Theme(s1,x1))
exists e1 x1 x2.(with(e1,x2) & n_toy(x2) & Actor(e1,x1) & v_play(e1) & n_child(x1))