About: http://webisa.webdatacommons.org/49150030

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	A subwoofer is a speaker that is designed to reproduce very low bass frequencies (usually those between 20 Hz and 125 Hz).
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.com