A window washer dressed in black hangs outside of a building.
A window washer is working.
"Hangs outside of a building" doesn't necessarily imply that he is working. He could be "hanging out".
exists e2 e1 s1 x1 x2 x3 x4 x5.(of(e2,x5) & n_building(x5) & r_outside(e2) & Actor(e2,x1) & v_hang(e2) & Theme(e1,s1) & Theme(s1,x4) & a_black(s1) & Theme(e1,x3) & v_dress(e1) & (x1 = x3) & n_washer(x1) & of(x1,x2) & n_window(x2))
exists e1 x1 x2.(Actor(e1,x1) & v_work(e1) & n_washer(x1) & of(x1,x2) & n_window(x2))