<http://schema.org/url>
<http://www.agweb.com/article/food_shortages_could_be_most_critical_world_issue_by_mid-century_NAA_University_News_Release/>
<http://www.agweb.com/article/food_shortages_could_be_most_critical_world_issue_by_mid-century_naa_university_news_release/>