Man wearing a jacket while welding.
A man in a jacket is welding.
If a man is in a jacket he is wearing it.
exists e2 e1 x1 x2 x3.(a_topic(x1) & while(e1,e2) & Actor(e2,x2) & v_weld(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_jacket(x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(Actor(e1,x1) & v_weld(e1) & in(x1,x2) & n_jacket(x2) & n_man(x1))