In the octagon. @ Singapore https://t.co/6VaEjE3LQB
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Central Region
[{'url': 'https://t.co/6VaEjE3LQB', 'expanded_url': 'https://www.instagram.com/p/B9i3-pcjzMAzivEPwmh-SNrGhXFBcxaOQEAGGE0/?igshid=18jdsiys1mttx', 'display_url': 'instagram.com/p/B9i3-pcjzMAz…', 'indices': [28, 51]}]
MARINA CENTRE
['octagon', 'singapore', 'https://t.co/6vaeje3lqb']
[]
octagon
octagon singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance report feedback."},
    ]

The post "octagon singapore" does not appear to be related to a maintenance report feedback to public flat house in Singapore. The term "octagon" is a geometric shape, and it is not clear what this has to do with public housing or maintenance reports. Therefore, the answer is "False" for the "relatedness" field, and the "type" field is set to "none" because it is not related to any specific category. The "explanation" field provides a brief explanation for why the post is not related to the given topic.