<http://schema.org/alternativeHeadline>
"Feature length documentary tells the haunting story of SeaWorld orca Tilikum, the three deaths he's caused, and the serious consequences of whales in captivity."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/lifestyle/arts-culture/blogs/blackfish-trailer-reveals-the-dark-side-of-captive-killer-whales>