About: http://webisa.webdatacommons.org/280017832

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	Mechanical pressure can be positive pressure or negative pressure, such as a vacuum.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com