About: http://webisa.webdatacommons.org/207518835

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	Sound is a longitudinal wave, which means the particles of the medium vibrate parallel to the direction of propagation of the wave.
http://www.w3.org/ns/prov#wasQuotedFrom	physics.info