About: http://webisa.webdatacommons.org/57266752

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	Preferably, first heat exchanger tube 18 and second heat exchanger tube 34 are a malleable metal, such as copper, to facilitate manufacture as will be explained below.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com