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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	Statistics on the types of data indicated below should be drawn up every two years and relate to each of the two years preceding the survey year.
http://www.w3.org/ns/prov#wasQuotedFrom	unesco.org