The man is welding the iron.
The person is making a sword.
The man can be welding more than a sword.
exists e1 x1 x2.(n_iron(x2) & n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_weld(e1))
exists e1 x1 x2.(n_person(x1) & Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & n_sword(x2))