<http://schema.org/description>
"How did life on Earth begin? Theories abound, but one popular one posits that it started spontaneously from primordial ooze on our planet, while another holds that it literally came from outer space. Who&amp;#039;s right?"^^<http://www.w3.org/2001/XMLSchema#string>
<http://science.howstuffworks.com/life/evolution/origin-of-life-on-earth5.htm>