<http://schema.org/keywords>
"chewing tobacco in baseball mlb mlb players association major league baseball MLB chewing tobacco bill San Francisco Giants tobacco california chewing tobacco california chewing tobacco mlb"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.si.com/mlb/2015/04/22/tobacco-ban-mlb-san-francisco-ballparks>