About: http://webisa.webdatacommons.org/397125772

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	When the chamber is then close to the atmosphere and opened to the measuring pressure, the system has nulled all the factors except the ones desired to be measured, and reads the pressure relative to atmospheric pressure.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es