About: http://webisa.webdatacommons.org/239176965

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	On WSJ there is an article about the effective time of play in a tennis match: it is about 17,5%.
http://www.w3.org/ns/prov#wasQuotedFrom	tennis-x.com