About: http://webisa.webdatacommons.org/17845111

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	So sound can be diffracted easily around buildings or through doorways.This is why you can often hear people although you cannot see them,Sound waves are diffracted as they leave their source, for example the radio.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com