About: http://webisa.webdatacommons.org/163190152

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	According to Warren, they reduce air, noise, and electromagnetic pollution and he recommends them mostly for the kitchen, bedrooms, and bathrooms.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com