About: http://webisa.webdatacommons.org/228595647

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 post is a good summary -- an addition from my experience: Considering the high price of ArcGis, Envi, Matlab and other tools, I prefer OpenSource, which is free.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com