About: http://webisa.webdatacommons.org/19831153

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	Two pitches are an octave apart if their frequencies have the ratio 2:1.
http://www.w3.org/ns/prov#wasQuotedFrom	ethanhein.com