<http://schema.org/about>
"The \"coffin-within-a-coffin\" is thought to have been sealed in the 13th or 14th century \u2014 more than 100 years before Richard III."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/wilderness-resources/stories/coffin-at-king-richard-iii-burial-site-holds-another>