About: http://webisa.webdatacommons.org/39920056

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	Low quality material may only be used in the bottom part of larger fills if the material may be adequately secured towards sliding or other inconveniences.
http://www.w3.org/ns/prov#wasQuotedFrom	fao.org