About: http://webisa.webdatacommons.org/287243360

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	What you are talking about (observers, managers, factories etc...) is infrastructure that is there to help you with getting the abstraction right and support required functions such as persistence.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com