About: http://webisa.webdatacommons.org/201899140

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	Close the file without saving and re-open it.The reason why there is no tutorial covering this topic is because Undo is a feature common to just about every application used to edit text in one way or another.
http://www.w3.org/ns/prov#wasQuotedFrom	sublimetext.com