<http://schema.org/url>
<http://www.businessweek.com/articles/2014-07-31/southwest-ends-tie-in-with-seaworld-takes-shamu-off-its-planes>
<http://www.bloomberg.com/bw/articles/2014-07-31/southwest-ends-tie-in-with-seaworld-takes-shamu-off-its-planes>