<http://schema.org/alternativeHeadline>
"Although Obama hasn't gotten into the nitty-gritty, an eco-revamp of the White House continues to be a white-hot green topic."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/your-home/remodeling-design/blogs/the-greenest-white-house-on-pennsylvania-ave>