<http://schema.org/alternativeHeadline>
"What do onions, bananas and Jerusalem artichokes have in common, besides being vegetables? (This is relevant, we promise.)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/health/fitness-well-being/questions/what-are-prebiotics-and-do-we-need-them>