About: http://webisa.webdatacommons.org/391966331

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	Preferably, the passageway is lined with the second material, and the sealing means is a ball slightly larger in cross-section than the diameter of the passageway.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es