<http://schema.org/alternativeHeadline>
"Discovery marks the finding of the 'oldest, most primitive woolly rhino.' Scientists say the remains are 3.7 million years old."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/animals/stories/scientists-find-woolly-rhino-remains-in-tibet>