About: http://webisa.webdatacommons.org/139804893

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	It can deteriorate over time or become masked by additives, especially slip additives, migrating to the surface.
http://www.w3.org/ns/prov#wasQuotedFrom	pffc-online.com