About: http://webisa.webdatacommons.org/51518739

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	The terms ton and toff refer respectively to the length of time (in seconds, minutes, or other time units) that the furnace or air conditioning unit is on or off in a given cycle; ttotal =ton +toff, i.e., an entire on-off cycle.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com