About: http://webisa.webdatacommons.org/214686163

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	When constructing a communication channel, care should be taken to prevent contaminants such as dust or smoke from filtering through the open spaces between light transmitters and light receivers;
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com