<http://schema.org/alternativeHeadline>
"Here's a by the numbers look at the two cruise disasters, including the depth of the wrecks and which ship had the most bragging rights."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/lifestyle/arts-culture/stories/comparing-cruise-ship-disasters-costa-concordia-vs-titanic>