About: http://webisa.webdatacommons.org/391779461

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	But I already said that if Nadal is the best clay courter and Sampras is the best grass courter, I don???t understand how Federer can be considered the best of all.
http://www.w3.org/ns/prov#wasQuotedFrom	tennis-x.com