About: http://webisa.webdatacommons.org/410447373

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	If you do not have any means to check the vacuum before entering the water, you also do not know if there is a leak.
http://www.w3.org/ns/prov#wasQuotedFrom	wetpixel.com