A man is reading a small book.
The man is reading a magazine.
A magazine is not a book.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_read(e1) & n_book(x2) & a_small(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_read(e1) & n_magazine(x2))