<http://schema.org/url>
<http://phenomena.nationalgeographic.com/2009/05/04/the-natural-history-of-the-flu-my-latest-story-for-the-ny-times/>
<http://phenomena.nationalgeographic.com/2009/05/04/the-natural-history-of-the-flu-my-latest-story-for-the-ny-times/>