a woman is holding a piece of wood while a man is drilling it.
The piece of wood is small.
The size of the piece of wood, small or large, is not implied.
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 s1 x1 x2.(n_piece(x1) & Theme(s1,x1) & a_small(s1) & of(x1,x2) & n_wood(x2))