The Sony Walkman can serve as a functional example whose life cycle is well-documented.

Entity and relation annotations:
id: 0
type: entity
value: text: The Sony Walkman
labels: <Production>
id: 1
type: entity
value: text: Sony
labels: <Organization>
type: relation
to_id: 0
labels: Organization:develops/produces/sells:Production
from_id: 1