About: http://webisa.webdatacommons.org/448605986

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	FIG. 21 is an example of a second kind of optical identifying means on a slide;
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca