1<?xml version="1.0" encoding="UTF-8" ?>
2<!DOCTYPE books SYSTEM "books.dtd">
3<books>
4    <book>
5    <title>The Grapes of Wrath</title>
6    <author>John Steinbeck</author>
7    <author>John Steinbeck</author>
8    </book>
9    <book>
10    <title>The Pearl</title>
11    <author>John Steinbeck</author>
12    </book>
13</books>
14