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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 kinds of switches work by detecting movement such as a tilting arm or head, making a sound or breaking a beam of light. ??? Related books and articles
http://www.w3.org/ns/prov#wasQuotedFrom	questia.com