About: http://webisa.webdatacommons.org/2474853

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	Some of the passages may remain open throughout a process, such as a passage leading to a waste chamber, while others are blocked by barriers until it is desired to move a substance between chambers.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr