About: http://webisa.webdatacommons.org/126511564

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	Sometimes there is some energy at harmonics of this, i.e., frequencies of nf, where n is an integer.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es