A man in orange is bent over welding something on the ground.
A welder bends dows as he welds.
Man welding is another way to say welder.
exists e1 s1 x1 x2 x3 x4.(n_ground(x4) & over(s1,e1) & on(e1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_weld(e1) & n_thing(x3) & Theme(s1,x1) & a_bent(s1) & in(x1,x2) & n_orange(x2) & n_man(x1))
exists e1 p1 x1 x2.(exists e2.(Actor(e2,x1) & v_weld(e2)) & n_male(x1) & as(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_bend(e1) & n_dow(x2) & n_welder(x1))