A man drives a yellow vehicle.
The man is driving a car.
A yellow vehicle can be a car.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_vehicle(x2) & a_yellow(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_car(x2))