<http://schema.org/alternativeHeadline>
"Kate Middleton, Prince William Expecting Second Baby, Pregnant Duchess Suffering Severe Morning Sickness Again"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.usmagazine.com/celebrity-news/news/kate-middleton-pregnant-expecting-second-baby-with-prince-william-201489>