Cook County's current County Board president is Toni Preckwinkle.

Entity and relation annotations:
id: 0
type: entity
value: text: Cook County
labels: <Location>
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type: entity
value: text: County Board president
labels: <Title>
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type: entity
value: text: Toni Preckwinkle
labels: <Person>
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labels: Person:holds_title:Title
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type: relation
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labels: Person:works_at:Location
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