Genesis 2.0 - Filter schema attributes for body element.

genesis-body-filter-schema.php

<?php
//* Do NOT include the opening php tag

//* Change microdata schema when on the About or Contact page.
//* http://schema.org/docs/documents.html
//* genesis/lib/functions/markup.php
add_filter( 'genesis_attr_body', 'rvam_body_schema' );
function rvam_body_schema( $attributes ){
  
	//* Use AboutPage schema on our about page
	if( is_page( array( 'about', 1727 ) ) ) {
		$attributes['itemtype'] = 'http://schema.org/AboutPage';
	}
		
	//* Use ContactPage schema on our contact page
	if( is_page( 'contact' ) ) {
		$attributes['itemtype'] = 'http://schema.org/ContactPage';
	}

	return $attributes;

}