Ghost day festival #ghost #ghostday #sg https://t.co/9zxG7gOmiv
Northlink Building
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SEMBAWANG NORTH
['ghost', 'day', 'festival', '#ghost', '#ghostday', '#sg', 'https://t.co/9zxg7gomiv']
['festival', 'festival', 'festival', 'ghost', 'festival']
ghost festival #ghost #ghostday
ghost day festival ghost ghostday sg
  [
    {"relatedness": False, "type": "none", "explanation": "This post does not relate to a maintenance report feedback for a public flat house."},
    ]

It seems that the post does not mention anything related to maintenance report feedback for a public flat house. The words used in the post, such as "ghost day festival" and "ghost", do not suggest any connection to maintenance or infrastructure issues. Therefore, the answer is that the post does not relate to a maintenance report feedback to public flat house.