About: http://webisa.webdatacommons.org/426776539

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	I suggest keeping the ball types the same, because I believe players are most sensitive to ball changes.
http://www.w3.org/ns/prov#wasQuotedFrom	menstennisforums.com