<http://schema.org/alternativeHeadline>
"Did you know it's National Parks Week in New York City? MNN got a behind-the-scenes tour of three sites people don't usually think of when they hear national parks."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/lifestyle/eco-tourism/stories/a-walk-in-the-national-park>