About: http://webisa.webdatacommons.org/403721836

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	To the best of my knowledge, there is no such thing as an annotation literal as you want to use it in your add implementation.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com