<http://schema.org/alternativeHeadline>
"The inner coffin is believed to be 'a high-status burial' due to the doubling up of coffins."^^<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>