A woman in a green shirt is welding.
A woman is repairing metal.
Although she is welding, it does not imply she is repairing metal.
exists e1 s1 x1 x2.(Actor(e1,x1) & v_weld(e1) & in(x1,x2) & n_shirt(x2) & a_green(s1) & Theme(s1,x2) & n_woman(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_repair(e1) & n_metal(x2) & n_woman(x1))