Loch Ard lies downstream of Loch Chon.

Entity and relation annotations:
id: 0
type: entity
value: text: Loch Ard
labels: <Location>
id: 1
type: entity
value: text: Loch Chon
labels: <Location>
type: relation
to_id: 1
labels: Location:located_in:Location
from_id: 0