A shirtless man with a backpack.
The man is partially dressed.
Partially dressed man indicates the shirtless man.
exists s1 x1 x2.(a_topic(x1) & with(x1,x2) & n_backpack(x2) & n_man(x1) & a_shirtless(s1) & Theme(s1,x1))
exists e1 s1 x1.(n_man(x1) & a_partially(s1) & Manner(e1,s1) & Theme(e1,x1) & v_dress(e1))