About: http://webisa.webdatacommons.org/6691617

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	In other words, processes such as sound and water waves needed some substance to support their existence.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com