About: http://webisa.webdatacommons.org/6783809

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	In the Tennis magazine article, which can be found under the link given above, it is clearly stated that today, there is an objective ranking based on points won mainly in ITF tournaments.
http://www.w3.org/ns/prov#wasQuotedFrom	tennis-x.com