<http://schema.org/mainEntityOfPage>
<http://www.upi.com/Entertainment_News/Music/2013/10/17/Justin-Bieber-documentary-to-open-Dec-25/17521382041879/>
<http://www.upi.com/Entertainment_News/Music/2013/10/17/Justin-Bieber-documentary-to-open-Dec-25/UPI-17521382041879/>