<http://schema.org/headline>
"Red River: NASA&amp;#039;s Mars Rover Discovers Direct Evidence of Flowing Water"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.popularmechanics.com/space/moon-mars/a8191/nasas-mars-rover-discovers-direct-evidence-of-flowing-water-13138895/>