About: http://webisa.webdatacommons.org/175532668

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	it is not compulsory and it takes nearly an hour.They say that reponse rates are highest in rural areas, and lowest in inner cities, especially London, where the overall response was only 62%.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com