About: http://webisa.webdatacommons.org/80038316

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	Hence, additional transmissions of synchronization pulses using electromagnetic signals, for example infrared light, are no longer needed.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es