About: http://webisa.webdatacommons.org/117496965

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 setting-up of these arrangements is difficult and time consuming and noise generated by other objects, either in the foreground or background which are not of interest, such as pedestrians, often cause reliability problems.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com