About: http://webisa.webdatacommons.org/29801972

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	In addition, members such as a mechanism for supporting and adjusting these optical elements and a dust-proof member (cover) for keeping the optical elements from dust are not necessary, and accordingly the apparatus can be made compact.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com