About: http://webisa.webdatacommons.org/382789158

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	In the navigation of the visually impaired, an external input such as force or sound is required about the direction of travel to reach a particular target position.
http://www.w3.org/ns/prov#wasQuotedFrom	researchgate.net