I'm at UB. One in Singapore https://t.co/nA0nDHQ32c
Central Region
[{'url': 'https://t.co/nA0nDHQ32c', 'expanded_url': 'https://www.swarmapp.com/c/9DUqRrIUpO7', 'display_url': 'swarmapp.com/c/9DUqRrIUpO7', 'indices': [28, 51]}]
KAMPONG UBI
["i'm", 'ub', 'one', 'singapore', 'https://t.co/na0ndhq32c']
[]
ub 1 singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance report feedback."},
    ]

The post does not relate to a maintenance report feedback to public flat house in Singapore. The word "ub" is likely a typo or a non-sensical term, and the mention of "Singapore" does not provide any context for a maintenance report. Therefore, the post does not match any of the categories mentioned in the question.