About: http://webisa.webdatacommons.org/9614875

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	??????my point is that Sampras was the best on grass and fast courts and Nadal is the best on clay, so how can Federer be the best if he???s below these 2 on particular surfaces.???
http://www.w3.org/ns/prov#wasQuotedFrom	tennis-x.com