<http://schema.org/alternativeHeadline>
"A study reveals that searches for allergy symptoms such as 'sneezing' and 'itchy nose,' peak during the second week in May."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/health/allergies/stories/internet-searches-reveal-time-of-peak-allergy-suffering>