<http://webisa.webdatacommons.org/68631397> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/prov/277702505> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/68631397> . <http://webisa.webdatacommons.org/68631397> <http://www.w3.org/ns/prov#value> "It will be understood by a person skilled in the art that other methods of constructing time-varying references signals can be more appropriate, depending on the application, system and other parameters." . <http://webisa.webdatacommons.org/68631397> <http://www.w3.org/ns/prov#wasQuotedFrom> <google.com> . <http://webisa.webdatacommons.org/prov/420926709> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/68631397> .