About: http://webisa.webdatacommons.org/129076624

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	Please not there could be any string made with all kinds of characters except the my_expr rule.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com