About: http://webisa.webdatacommons.org/144606102

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	Well, this is sort of obvious, since it is exactly what your code does: It creates a new Line object on every MouseMove event.
http://www.w3.org/ns/prov#wasQuotedFrom	codeguru.com