About: http://webisa.webdatacommons.org/3586598

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	A sand layer which is from 1 to 50 mm, in particular from 5 to 30 mm, thick is particularly preferably placed in the substrate to be watered or in the tubular section directly connected to the substrate.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com