About: http://webisa.webdatacommons.org/82137292

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	However, the algorithms used are unintelligent in that they cannot reliably differentiate between the various types of obstructions and the ground.
http://www.w3.org/ns/prov#wasQuotedFrom	dur.ac.uk