About: http://webisa.webdatacommons.org/146223389

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	To do the necessary math, you can create your own spreadsheets using the formulas contained in books such as The Physics and Technology of Tennis.
http://www.w3.org/ns/prov#wasQuotedFrom	tennisindustrymag.com