About: http://webisa.webdatacommons.org/185846988

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	Getting a *really* quiet dead room in a building full of noise from ventilation, people and other machinery plus lower frequency vibrations caused simply by people walking around and such is near to impossible.
http://www.w3.org/ns/prov#wasQuotedFrom	head-fi.org