<http://schema.org/alternativeHeadline>
"Celebrated filmmaker teams up with author Siddhartha Mukherjee to create 6-hour documentary based on 'The Emperor of All Maladies: A Biography of Cancer.'"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/health/fitness-well-being/blogs/ken-burns-to-focus-next-documentary-on-cancer>