About: http://webisa.webdatacommons.org/158796161

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	There are items such as Flow switches that can be installed at each unit to shut down the unit, should the flow cease.
http://www.w3.org/ns/prov#wasQuotedFrom	hvac-talk.com