<http://schema.org/alternativeHeadline>
"Concussions in NFL still a huge issue years after McCoy incident"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.si.com/nfl/2015/12/03/nfl-concussions-colt-mccoy-case-keenum-ben-roethlisberger>