About: http://webisa.webdatacommons.org/313259150

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 interval between the pulses P2 and P3 is set to 1/60???n (s), where n is a positive integer.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com