a woman is holding a piece of wood while a man is drilling it.
Two people work on wood.
The woman and man are people.  Holding and drilling is the work they are doing.
exists e1 p1 x1 x2 x3.(exists e2 x4.(Theme(e2,x1) & Actor(e2,x4) & v_drill(e2) & n_man(x4)) & n_thing(x1) & while(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & of(x2,x3) & n_wood(x3) & n_piece(x2) & n_woman(x1))
exists e1 x1 x2.(on(e1,x2) & n_wood(x2) & Actor(e1,x1) & v_work(e1) & n_people(x1) & card_eq_2(x1))