About: http://webisa.webdatacommons.org/395439211

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	The task is particularly difficult where one fan exhausts from a set of ducts and hoods (multi-hood systems).
http://www.w3.org/ns/prov#wasQuotedFrom	who.int