1<?xml version="1.0"?> 2<doc> 3 <article author="Carmelo Montanez">article 1</article> 4 <book author="Mary Brady">book2</book> 5 <book author="Carmelo Montanez">book3</book> 6 <book author="Mary Brady">book4</book> 7 <book author="Carmelo Montanez">book5</book> 8 <book author="Mary Brady">book6</book> 9 <book author="David Marston">book7</book> 10 <book author="Rick Rivello">book8</book> 11 <book author="Carmelo Montanez">book9</book> 12 <book author="Mary Brady">book10</book> 13 <book author="Carmelo Montanez">book11</book> 14 <book author="Mary Brady">book12</book> 15 <book author="Carmelo Montanez">book13</book> 16 <book author="Lynne Rosenthal">book14</book> 17 <book author="Carmelo Montanez">book15</book> 18 <book author="Mark Skall">book16</book> 19</doc>