As SimpleXML
The Grapes of Wrath was written by John Steinbeck
The Pearl was written by John Steinbeck
As DOM 
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<b>Fatal error</b>:  Cannot use object of type DOMNodeList as array in <b>/home/miyasola/oldfile/usr/local/src/phpinst-webmail-ubuntu/php-5.4.7/ext/simplexml/examples/interop.php</b> on line <b>23</b><br />