We have Optimum Nutrition Hydro Whey available on our Carousell account : nffitnesssg ! .
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Direct link : https://t.co/uIe9meE0sQ .
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Central Region
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MARINA CENTRE
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  [
    {"relatedness": False, "type": "none", "explanation": "This post is not related to maintenance report feedback for public flat house."},
    ]

The given Twitter post does not relate to a maintenance report feedback to public flat house. The post is about a product availability notification on Carousell, and does not mention any issues or concerns related to public housing. Therefore, the answer is a JSON object with "relatedness" set to False, "type" set to "none", and "explanation" set to a brief explanation of why the post is not related to the requested topic.