The man has his white shirt off on a green field.
A man is shirtless standing in a green field outside.
If we say someone has his shirt off, it implies he is not wearing one or is shirtless.
exists e1 s1 s2 s3 x1 x2 x3.(n_shirt(x2) & a_white(s1) & Theme(s1,x2) & of(x2,x1) & n_male(x1) & n_man(x1) & on(e1,x3) & n_field(x3) & a_green(s3) & Theme(s3,x3) & a_off(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1))
exists p1 s1 x1 x2 x3.(in(p1,x2) & n_outside(x2) & of(x2,x3) & n_field(x3) & a_green(s1) & Theme(s1,x2) & exists s2 x4.((x1 = x4) & n_standing(x4) & a_shirtless(s2) & Theme(s2,x4)) & n_man(x1))