The Bristol Blenheim was used by both Bomber and Fighter Commands.

Entity and relation annotations:
id: 0
type: entity
value: text: The Bristol Blenheim
labels: <Production>
id: 1
type: entity
value: text: Bomber and Fighter Commands
labels: <Organization>
type: relation
to_id: 0
labels: Organization:manages/uses:Production
from_id: 1