About: http://webisa.webdatacommons.org/248121646

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	Other suitably inactive perforate or porous materials can also be employed, such as a perforated sheet or a non-woven fabric sheet material, either having equal or unequal foraminae.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com