About: http://webisa.webdatacommons.org/211361665

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	I had tried most suggestions except the idea of gently using a paper clip to probe into the 2 vacuum hose ports.
http://www.w3.org/ns/prov#wasQuotedFrom	hvac-talk.com