About: http://webisa.webdatacommons.org/223821934

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	I would reference objects belonging to other DAOs by id only (a "service id in your example) and use object caches to cleanly separate the two types of objects.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com