A man is mortaring bricks.
A man drives a race car.
He can't be both driving and mortaring bricks.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_mortar(e1) & n_brick(x2) & n_man(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_car(x2) & of(x2,x3) & n_race(x3) & n_man(x1))