About: http://webisa.webdatacommons.org/428868429

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	However, the correcting of off-axis aberrations, such as astigmatism and distortion, etc., becomes difficult.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com