<http://schema.org/keywords>
"champions league cristiano ronaldo real madrid schalke basel porto real madrid schalke champions league cristiano ronaldo champions league basel porto champions league marcelo golazo"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.si.com/planet-futbol/2015/02/18/champions-league-real-madrid-schalke-basel-porto-cristiano-ronaldo>