A man in a blue cap is driving a blue car.
The man is driving a sedan.
There are many different kinds of car then just a sedan.
exists e1 s1 s2 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_drive(e1) & n_car(x3) & a_blue(s2) & Theme(s2,x3) & in(x1,x2) & n_cap(x2) & a_blue(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_sedan(x2))