About: http://webisa.webdatacommons.org/248373892

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	Other techniques for detecting faults in tubes consist in injecting a test gas, in particular helium, into the tube to be monitored, and in detecting any traces of helium in the surrounding atmosphere.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com