<http://schema.org/about>
"From clipping fingernails to making sandwiches, the simple tasks we take  for granted on Earth become trickier in the weightless conditions of space."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/space/stories/how-astronauts-brush-their-teeth-in-space>