<http://schema.org/mainEntityOfPage>
<http://www.digitalspy.com/showbiz/news/a386242/katy-perry-i-had-to-smile-through-the-tough-times-last-year/True>
<http://www.digitalspy.com/showbiz/news/a386242/katy-perry-i-had-to-smile-through-the-tough-times-last-year/>