About: http://webisa.webdatacommons.org/455214725

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 is to be appreciated that the filter material block 456 can be constructed from various materials, such as charcoal or other standard carbon-based material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au