<http://webisa.webdatacommons.org/prov/266379526> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/289667989> . <http://webisa.webdatacommons.org/289667989> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/289667989> <http://www.w3.org/ns/prov#wasQuotedFrom> <occupationalinfo.org> . <http://webisa.webdatacommons.org/289667989> <http://www.w3.org/ns/prov#value> "Corrects program errors, using methods such as modifying program or altering" .