About: http://webisa.webdatacommons.org/323289649

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 base 22 as well as the segment blocks 1-12 may be made of wood or other material with sufficient dimensional stability, machineability and the ability to be laser etched or cut.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com