<http://schema.org/headline>
"Elephant Tracks 7 Million Years Old, Found Fossilized At 'Mleisa 1' Site In Arabian Desert, Are World's Oldest"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.huffingtonpost.com/2012/02/22/elephant-tracks-seven-million-years-old_n_1293290.html>