About: http://webisa.webdatacommons.org/6193272

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	Initialize it to false, set it true if there is an error and use its value in an if statement to control whether to call the methods.
http://www.w3.org/ns/prov#wasQuotedFrom	javaprogrammingforums.com