About: http://webisa.webdatacommons.org/202079546

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	Since the ball is a sphere, all contraction and expansion would be from this center.
http://www.w3.org/ns/prov#wasQuotedFrom	yangfamilytaichi.com