PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The invention relates to an optoelectronic apparatus, especially one usable as an optocoupler, including: A light-emitting, optoelectronic, functional element; a light-sensitive, optoelectronic, functional element; and a light-conducting, functional element composed, at least in part, of transmissive material, such as e.g. translucent plastic or glass.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com