About: http://webisa.webdatacommons.org/50064154

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	As the years go by, monuments and markers can become stained or dirty from pollen, tree sap, grass clippings, dirt, leaves, moss, likens and other elements.
http://www.w3.org/ns/prov#wasQuotedFrom	gumtree.com