About: http://webisa.webdatacommons.org/365058194

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	ball is pressurised and is an additional ball specified for high altitude play above 4,000 feet (1,219 m) above sea level only.4.The deformation shall be the average of a single reading along each of three perpendicular axes.
http://www.w3.org/ns/prov#wasQuotedFrom	itftennis.com