Be #cos monday dark blues @ Singapore https://t.co/QXDor5AGJa
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Central Region
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MARINA CENTRE
['#cos', 'monday', 'dark', 'blue', 'singapore', 'https://t.co/qxdor5agja']
['dark', 'blue']
#cos monday dark blues
cos monday dark blues singapore
  [
    {"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 in Singapore. The phrase "cos Monday dark blues" could be a reference to a mood or a feeling, and the mention of Singapore could be a location, but it does not provide any information related to maintenance report feedback.