<http://schema.org/alternativeHeadline>
"Mowing the lawn can be a dreaded chore, and a non-eco-friendly one at that. Make your lawn deep-down green with these mowing tips."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/your-home/at-home/stories/3-gas-free-earth-friendly-lawn-mowers>