About: http://webisa.webdatacommons.org/282003217

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	You can calibrate or set the scale of an image then use any of Photoshop Extended's selection tools to define and calculate distance, perimeter, area, or other measurements.
http://www.w3.org/ns/prov#wasQuotedFrom	cadalyst.com