About: http://webisa.webdatacommons.org/253922601

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	For example, it may be possible to sharpen the material defining the edges of the aperture, for instance, where the material is a metal or a hard plastic material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com