About: http://webisa.webdatacommons.org/31169593

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	Each set is made of a solid material such as rubber, urethane, plastic, metal or other solid material, with a split internal cavity or cavities to fit one or more charge shapes.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com