Amtrak's "Downeaster" and "Northeast Regional" offer the main passenger rail service on the Seaboard.

Entity and relation annotations:
id: 0
type: entity
value: text: Amtrak
labels: <Organization>
id: 1
type: entity
value: text: the Seaboard
labels: <Location>
id: 2
type: entity
value: text: "Downeaster"
labels: <Production>
id: 3
type: entity
value: text: "Northeast Regional"
labels: <Production>
type: relation
to_id: 2
labels: Organization:develops/produces/sells:Production
from_id: 0
type: relation
to_id: 3
labels: Organization:develops/produces/sells:Production
from_id: 0