<http://schema.org/keywords>
"marcel de jong marcel de jong sporting kansas city marcel de jong international player marcel de jong canada marcel de jong germany marcel de jong joins kansas city marcel de jong join mls mls marcel de jong"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.si.com/planet-futbol/2015/03/02/sporting-kansas-city-sign-defender-marcel-de-jong>