About: http://webisa.webdatacommons.org/163594119

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 onProgressUpdate() you have to use the data argument to get your latitude and longitude such as data.getLatitude() to construct your Marker's Position.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com