I'm at POSB in Singapore https://t.co/9GM3V3XNF1
Central Region
[{'url': 'https://t.co/9GM3V3XNF1', 'expanded_url': 'https://www.swarmapp.com/c/iOR9Xu8l3B9', 'display_url': 'swarmapp.com/c/iOR9Xu8l3B9', 'indices': [25, 48]}]
GEYLANG EAST
["i'm", 'posb', 'singapore', 'https://t.co/9gm3v3xnf1']
[]
posb singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance report feedback."},
    ]

It seems that the Twitter post "posb singapore" does not relate to a maintenance report feedback to public flat house. It is possible that "posb singapore" is a reference to a different topic or context. If you have any further information or context about the post, please let me know and I will do my best to assist you.