About: http://webisa.webdatacommons.org/131135929

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	In answer to your question, evidently everything (I assume including valves) was normal on my echo.
http://www.w3.org/ns/prov#wasQuotedFrom	medhelp.org