Man in plaid shirt leaning against a wall.
Someone is leaning against the wall.
A "man" is "someone," and "leaning against a wall" could be rephrased as "leaning against the wall."
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & against(e1,x4) & n_wall(x4) & Actor(e1,x3) & v_lean(e1) & (x2 = x3) & n_shirt(x2) & a_plaid(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2.(n_wall(x2) & against(e1,x2) & Actor(e1,x1) & v_lean(e1) & n_person(x1))