<http://schema.org/alternativeHeadline>
"The O'Neill Passive House, America's first passive house retrofit project, requires as much energy to operate as a standard hair dryer."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/your-home/remodeling-design/blogs/the-oneill-passive-house-cozy-comfortable-and-crazy-efficient>