<http://schema.org/alternativeHeadline>
"The first family is planting a garden on the White House lawn, hoping to make it a place of 'education and awareness.'"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/your-home/organic-farming-gardening/blogs/obamas-to-plant-white-house-garden>