About: http://webisa.webdatacommons.org/52340448

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	This discrepancy yields some problems, including the necessity of using a collimating lens with a high numerical aperture, or a very large display source.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk