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  [
    {"relatedness": False, "type": "none", "explanation": "This post is not related to maintenance report feedback for public flat houses."},
    ]

The post "marina bay sands casino singapore" does not relate to a maintenance report feedback for public flat houses. It is a mention of a specific location, Marina Bay Sands, which is a casino and hotel complex in Singapore. Therefore, the post does not fall under any of the categories mentioned in the question.