About: http://webisa.webdatacommons.org/337916735

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	If the effective date is a date other than the confirmation date, overlay the confirmation date with the effective date
http://www.w3.org/ns/prov#wasQuotedFrom	irs.gov