During the Battle of the Niemen River, Poland attacked Lithuania on a wide front.

Entity and relation annotations:
id: 0
type: entity
value: text: During the Battle of the Niemen River
labels: <Date>
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type: entity
value: text: the Battle of the Niemen River
labels: <Event>
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type: entity
value: text: the Niemen River
labels: <Location>
id: 3
type: entity
value: text: Poland
labels: <Location>
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type: entity
value: text: Lithuania
labels: <Location>
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to_id: 2
labels: Event:Occurs_at:Location
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