A man with no shirt on and blue jeans.
That person is shirtless.
The person is a man and no shirt on can be explained as shirtless.
exists x1.(-exists s1 x2 x3.(a_topic(x1) & with(x1,x2) & on(x2,x3) & n_jeans(x3) & a_blue(s1) & Theme(s1,x3) & n_shirt(x2)) & n_man(x1))
exists s1 x1.(n_person(x1) & Theme(s1,x1) & a_shirtless(s1))