The submarine cable was laid by Global Marine Systems using the "Sovereign" service vessel.

Entity and relation annotations:
id: 0
type: entity
value: text: Global Marine Systems
labels: <Organization>
id: 1
type: entity
value: text: the "Sovereign" service vessel
labels: <Production>
type: relation
to_id: 1
labels: Organization:manages/uses:Production
from_id: 0