About: http://webisa.webdatacommons.org/165532401

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	Like water waves, sound waves need a medium to spread in.Sound is a sequence of waves of pressure which propagates through compressible media such as air or water.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com