About: http://webisa.webdatacommons.org/247235792

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	By listening to cars as they move or idle, we determine whether lights have turned red or green and set our direction as we cross streets with rounded curbs.
http://www.w3.org/ns/prov#wasQuotedFrom	nfb.org