A man who's head and face is covered is walking with a rather large weapon on his shoulder.
A man is returning a large weapon to its owner.
The fact that a man who's head and face is covered is walking with a rather large weapon on his shoulder does not imply that he is returning a large weapon to its owner.
exists e1 e3 e2 p1 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8 x9.(with(e3,x7) & on(x7,x9) & n_shoulder(x9) & of(x9,x8) & n_male(x8) & n_weapon(x7) & a_large(s2) & Theme(s2,x7) & r_rather(x7) & Actor(e3,x6) & v_walk(e3) & exists e4 x10.(Theme(e4,x10) & v_cover(e4) & n_face(x10)) & that(x6,p1) & n_man(x6) & with(e2,x4) & on(x4,x5) & n_shoulder(x5) & of(x5,x1) & n_male(x1) & n_weapon(x4) & a_large(s1) & Theme(s1,x4) & r_rather(x4) & Actor(e2,x1) & v_walk(e2) & Theme(e1,x3) & Actor(e1,x2) & v_'s(e1) & n_head(x3) & (x1 = x2) & n_man(x1))
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_return(e1) & to(x2,x3) & n_owner(x3) & of(x3,x1) & n_thing(x1) & n_weapon(x2) & a_large(s1) & Theme(s1,x2) & n_man(x1))