I'm at Mandarin Gallery in Singapore https://t.co/bCemoUwjet
<a href="https://www.swarmapp.com" rel="nofollow">Foursquare Swarm</a>
Central Region
[{'url': 'https://t.co/bCemoUwjet', 'expanded_url': 'https://www.swarmapp.com/c/awTBJIM6pkb', 'display_url': 'swarmapp.com/c/awTBJIM6pkb', 'indices': [37, 60]}]
SOMERSET
["i'm", 'mandarin', 'gallery', 'singapore', 'https://t.co/bcemouwjet']
['mandarin', 'mandarin']
mandarin gallery
mandarin gallery singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance report feedback."},
    ]

The provided Twitter post does not relate to a maintenance report feedback to public flat house. The term "mandarin gallery singapore" does not contain any keywords related to maintenance, facilities, or public housing. Therefore, the post does not match any of the categories in the question.