<http://schema.org/about>
"Q: Every year in the spring, I pick lilacs and display them all over my home, but my husband has developed an allergy to them. Is there such a thing as hypoalle"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/health/allergies/questions/do-hypoallergenic-plants-exist>