About: http://webisa.webdatacommons.org/50906436

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	The foregoing ball may be made of a material such as hard metal, stainless steel, ruby and ceramic having a diameter of from about 0.3 to 1.2 mm.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au