About: http://webisa.webdatacommons.org/227276717

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	A signal is a signal and in an interval this signal can be replaced by a sum of sinusoids and doing so, as sinusoids are defined - to + infinity, we imply that the signal also is periodic in this range.
http://www.w3.org/ns/prov#wasQuotedFrom	parallax.com