About: http://webisa.webdatacommons.org/38698895

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	I have nothing that outputs an optical signal handy to see if it disappears if there is a signal going into the optical at the same time.
http://www.w3.org/ns/prov#wasQuotedFrom	head-fi.org