<http://schema.org/about>
"An extremely rare lunar event on the night of Jan. 4, 1912, may have set in motion history's most infamous iceberg: the one that, three and a half months later,"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/space/stories/did-a-supermoon-sink-the-titanic>