The Oakland Athletics won three World Series while Reading was mayor.

Entity and relation annotations:
id: 0
type: entity
value: text: The Oakland Athletics
labels: <Organization>
id: 1
type: entity
value: text: World Series
labels: <Event>
id: 2
type: entity
value: text: Reading
labels: <Person>
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type: entity
value: text: mayor
labels: <Title>
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labels: Person:holds_title:Title
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type: relation
to_id: 1
labels: Organization:Engagement:Event
from_id: 0