About: http://webisa.webdatacommons.org/430923191

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	Extension tubes are a cheaper option, but they are a bit more of a fiddle than a proper macro lens.
http://www.w3.org/ns/prov#wasQuotedFrom	digitalcameraworld.com