About: http://webisa.webdatacommons.org/271940435

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 cursor may be formed of transparent plastic or other material and is of such size and height that acoustic signals are reflected to the transducers.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com