About: http://webisa.webdatacommons.org/312951326

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 A above is often set at although other frequencies are also used, such as 442 Hz and 443 Hz.
http://www.w3.org/ns/prov#wasQuotedFrom	davidicke.com