<http://schema.org/keywords>
"2016 olympic soccer tournament 2016 rio olympics 2016 rio soccer tournament 2016 rio soccer stadiums 2016 olympics 2016 brazil olympics 2016 summer olympics"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.si.com/planet-futbol/2015/03/16/2016-olympic-soccer-stadiums-cities>