About: http://webisa.webdatacommons.org/13932946

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 drainpipes are commonly installed in trenches and surrounded by a supporting material such as gravel or polystyrene to prevent clogging.
http://www.w3.org/ns/prov#wasQuotedFrom	mdpi.com