About: http://webisa.webdatacommons.org/286365441

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	Depending on the location, soil conditions and other factors, the heat exchanger may be a few yards to a couple of hundred feet deep.
http://www.w3.org/ns/prov#wasQuotedFrom	cleantechies.com