About: http://webisa.webdatacommons.org/403308239

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	an oscillator ensemble and an external time reference such as GPS, when available, and
http://www.w3.org/ns/prov#wasQuotedFrom	dodtechmatch.com