About: http://webisa.webdatacommons.org/7013952

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	2) is mainly program design, though cannot be fully achieved without language support, since you need language mechanisms like private/static to protect against accidental use.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com