<http://schema.org/alternativeHeadline>
"Aww! Katy Perry Tweets \"Happy Birthday Cutie!\" to John Mayer"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.usmagazine.com/celebrity-news/news/katy-perry-tweets-happy-birthday-cutie-to-boyfriend-john-mayer-20131610>