Java BluePrints came out with a second application: the Java Adventure Builder reference application.

Entity and relation annotations:
id: 0
type: entity
value: text: Java BluePrints
labels: <Organization>
id: 1
type: entity
value: text: the Java Adventure Builder reference application
labels: <Production>
type: relation
to_id: 1
labels: Organization:develops/produces/sells:Production
from_id: 0