About: http://webisa.webdatacommons.org/436767351

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 sand in the filter will normally only need changing approximately every 5 years, though this will depend on factors such as pool usage, size etc.
http://www.w3.org/ns/prov#wasQuotedFrom	poolstoredirect.com.au