About: http://webisa.webdatacommons.org/228875944

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	It is also favorable to use a clear plastic for the viewing window, e.g. in form of a transparent circumferential ring around the device axis that is dome shaped and therefore functions as a magnifying glass.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au