About: http://webisa.webdatacommons.org/356143073

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	Bruce Yellin, a systems analyst for the Equitable Life Assurance Society, co-sponsor of the ratings, explained they were based on such factors as weight of the tournament and field, and the rating of the man a player defeated.
http://www.w3.org/ns/prov#wasQuotedFrom	tennis-warehouse.com