About: http://webisa.webdatacommons.org/136620212

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	Mac OS X uses the volume you set your headphones to when you last unplugged them (try for example plugging them in, muting the sound, and then plugging them out and - after a moment - back in: the sound should still be muted).
http://www.w3.org/ns/prov#wasQuotedFrom	superuser.com