About: http://webisa.webdatacommons.org/118619480

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	The sound waves are inaudible to the human ear and can originate from atmospheric explosions, explosive volcanoes, meteorites entering the atmosphere, rocket launches and other phenomena.
http://www.w3.org/ns/prov#wasQuotedFrom	ctbto.org