"Boarfish" sailed to the South China Sea to patrol the coast of French Indochina.

Entity and relation annotations:
id: 0
type: entity
value: text: "Boarfish"
labels: <Production>
id: 1
type: entity
value: text: the South China Sea
labels: <Location>
id: 2
type: entity
value: text: China
labels: <Location>
id: 3
type: entity
value: text: the coast of French Indochina
labels: <Location>
id: 4
type: entity
value: text: French
labels: <Location>
type: relation
to_id: 2
labels: Location:located_in:Location
from_id: 1
type: relation
to_id: 4
labels: Location:located_in:Location
from_id: 3