About: http://webisa.webdatacommons.org/390051862

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	Used . ...Subs - A sub or subwoofer is a speaker dedicated to the reproduction of bass frequencies, usually from about 20 Hz to about 200 Hz. .
http://www.w3.org/ns/prov#wasQuotedFrom	solarisnetwork.com