A window washer dressed in black hangs outside of a building.
A window washer wearing safety orange is washing the outside window.
A window washer cannot be dressed in black and wearing safety orange is either hanging outside the building or washing the window.
exists e1 e2 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 e2 s1 x1 x2 x3 x4 x5.(Theme(e2,x2) & Actor(e2,x1) & v_wash(e2) & n_window(x2) & n_window(x2) & a_outside(s1) & Theme(s1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & n_orange(x4) & of(x4,x5) & n_safety(x5) & (x1 = x3) & n_washer(x1) & of(x1,x2))