<http://schema.org/alternativeHeadline>
"Wes Welker concussion: Broncos veteran wide receiver likely won't retire, but NFL remains at crossroads with injury culture"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.si.com/nfl/2014/08/25/broncos-wes-welker-concussion-retirement-nfl-head-injuries>