About: http://webisa.webdatacommons.org/41765913

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	In addition, problems such as frequency and voltage references, pump and generation mode transition, interaction with power electronic interfaced loads, and stand-alone operation still need to be solved.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk