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"wes welker injury wes welker concussion wes welker denver broncos dj swearinger hit Houston Texans dj swearinger nfl concussions wes welker concussion history"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.si.com/nfl/2014/08/25/broncos-wes-welker-concussion-retirement-nfl-head-injuries>