The Army of the Potomac crossed the Rapidan River and the Overland Campaign commenced.

Entity and relation annotations:
id: 0
type: entity
value: text: The Army of the Potomac
labels: <Organization>
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type: entity
value: text: the Rapidan River
labels: <Location>
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type: entity
value: text: the Overland Campaign
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labels: Organization:Engagement:Event
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