A woman is reading a book on philosophy.
A woman is reading.
Reading a book signifies a person is reading.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_read(e1) & on(x2,x3) & n_philosophy(x3) & n_book(x2) & n_woman(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_read(e1) & n_thing(x2) & n_woman(x1))