<http://schema.org/mainEntityOfPage>
<http://www.si.com/si-wire/2013/01/29/congress-warns-nfl-players-may-be-called-to-testify-about-hgh>
<http://www.si.com/si-wire/2013/01/29/congress-warns-nfl-players-may-be-called-to-testify-about-hgh>