<http://schema.org/alternativeHeadline>
"Supergreens like kale, collards, spinach, swiss chard, and mustard greens are a healthy, delicious addition to any meal"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.bonappetit.com/recipes/healthy/slideshow/how-to-cook-prep-supergreens>