<http://schema.org/about>
"This infographic reveals how airborne irritants can be present year round \u2014\u00A0even in your house, where they can survive on carpets or couches and really aggra"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/health/allergies/stories/7-allergens-in-your-home-you-may-not-know-about>