About: http://webisa.webdatacommons.org/190878203

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	However, problems such as service life still remain unsolved for organic EL devices, and studies for improvement are under way.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk