About: http://webisa.webdatacommons.org/155401658

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 filter is undetectable during all activities, including sitting, and all the while the filter remains firmly attached and gives the person a sense of security.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es