<http://schema.org/url>
<http://www.tennisworldusa.org/news/news/Tennis_Stories/10826/navratilova-believes-serena-williams-can-win-more-than-20-grand-slams-if-she-stays-healthy/>
<http://www.tennisworldusa.org/news/news/all/10826/Navratilova-believes-Serena-Williams-can-win-more-than-20-Grand-Slams-if-she-stays-healthy/>