About: http://webisa.webdatacommons.org/199351349

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	To further reduce the impact of pressure fluctuations from the recirculating flow, acoustic foam 56 such as open-cell foam or other suitable damping material may be positioned within shell 30 to further isolate microphone 70.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com