During the Civil War, Pennsylvania played an important role in the Union's victory.

Entity and relation annotations:
id: 0
type: entity
value: text: Civil War
labels: <Event>
id: 1
type: entity
value: text: Pennsylvania
labels: <Organization>
id: 2
type: entity
value: text: the Union
labels: <Organization>
id: 3
type: entity
value: text: During the Civil War
labels: <Date>
type: relation
to_id: 0
labels: Organization:Engagement:Event
from_id: 1
type: relation
to_id: 0
labels: Organization:Engagement:Event
from_id: 2