<http://schema.org/about>
"Some scientists wonder if a series of recent earthquakes in the area surrounding Beijing are the aftershocks of a massive earthquake that hit the area in 1976."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/climate-weather/stories/could-recent-china-earthquakes-be-aftershocks-of-1976-quake>