<http://schema.org/mainEntityOfPage>
<http://www.upi.com/Entertainment_News/TV/2013/05/31/Dick-Van-Dyke-blames-titanium-dental-implants-for-headaches/71211370030908/>
<http://www.upi.com/Entertainment_News/TV/2013/05/31/Dick-Van-Dyke-blames-titanium-dental-implants-for-headaches/UPI-71211370030908/>