About: http://webisa.webdatacommons.org/321249273

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	If there is another process waiting for the output of your program you may choose to return 0 if everything is successful, -1 if there was an error or any other constant, according to what you want to communicate.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com