About: http://webisa.webdatacommons.org/435182798

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	So overall your expression means to match either any single character other than a-z or other than A-Z.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com