CityDesk ran on Microsoft Windows, and used the Microsoft Jet Database Engine.

Entity and relation annotations:
id: 0
type: entity
value: text: CityDesk
labels: <Production>
id: 1
type: entity
value: text: Microsoft
labels: <Organization>
id: 2
type: entity
value: text: Windows
labels: <Production>
id: 3
type: entity
value: text: the Microsoft
labels: <Organization>
id: 4
type: entity
value: text: Jet Database Engine
labels: <Production>
type: relation
to_id: 2
labels: Organization:develops/produces/sells:Production
from_id: 1
type: relation
to_id: 4
labels: Organization:develops/produces/sells:Production
from_id: 3