About: http://webisa.webdatacommons.org/38416391

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	These checks must be carried out cold, checking the expansion tanks (open types must have water at the initial level, whereas in closed types the pressure must be equal to or higher than the initial prefilling pressure).
http://www.w3.org/ns/prov#wasQuotedFrom	issuu.com