Philadelphia Jack O'Brien

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Philadelphia Jack O'Brien was an American light heavyweight and heavyweight boxer of the early 20th century, known for his technical skill and bouts against many top fighters of his era.

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Label	Occurrences
Philadelphia Jack O'Brien canonical	1

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Full triples — surface form annotated when it differs from this entity's canonical label.

Stanley Ketchel → fought → Philadelphia Jack O'Brien ⓘ