About: http://webisa.webdatacommons.org/176515017

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	You can combine this system by a monitoring script that sends alerts if lock files are present and have a creation date older than a given interval (let's say 1 hour for example if your script usually runs in a few minutes).
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com