About: http://webisa.webdatacommons.org/316058057

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	Many different means and mechanisms of doing both types of systems, including some auto-top-off device for tank-only systems as well, those listed here are just two of many.
http://www.w3.org/ns/prov#wasQuotedFrom	thereeftank.com