He is walking with a trash bag.
he is carrying a plastic bag
A trash bag is a form of plastic bag.
exists e1 x1 x2.(with(e1,x1) & n_bag(x1) & of(x1,x2) & n_trash(x2) & Actor(e1,x1) & v_walk(e1) & n_male(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_carry(e1) & n_bag(x2) & of(x2,x1) & n_plastic(x1) & n_male(x1))