About: http://webisa.webdatacommons.org/115843033

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	AFAIC, this answer is the best answer to date to my question (how to troubleshoot...) so I am awarding the bounty here.
http://www.w3.org/ns/prov#wasQuotedFrom	superuser.com