About: http://webisa.webdatacommons.org/374950273

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	it will be found that electrical heating elements provide the most convenient method of giving the flexibility of operation that is required, but other forms of heating such as radiant tube gas or oil burners can be used.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com