About: http://webisa.webdatacommons.org/68910434

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	For letters published in the Grierson edition this field indicates when a source other than the manuscript was used for the printed text.
http://www.w3.org/ns/prov#wasQuotedFrom	nls.uk