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The term "E Letter Prison" does not correspond to any known location or entity in Singapore. There is no public information or records indicating an "E Letter Prison" related to Singapore’s geography, history, or institutions.

If you are referring to a specific place, event, or concept, please provide more context or details. More context is necessary to generate a relevant article.

Singapore’s prisons are known by different names and do read more not include any called E Letter Prison. Correctional facilities in Singapore have established names distinct from this term.

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