I'm at UB. One in Singapore https://t.co/EwkACtJj2x
Central Region
[{'url': 'https://t.co/EwkACtJj2x', 'expanded_url': 'https://www.swarmapp.com/c/jYj2SXHZWap', 'display_url': 'swarmapp.com/c/jYj2SXHZWap', 'indices': [28, 51]}]
KAMPONG UBI
["i'm", 'ub', 'one', 'singapore', 'https://t.co/ewkactjj2x']
[]
ub 1 singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance report feedback."},
    ]

It seems that the Twitter post "ub 1 singapore" does not relate to a maintenance report feedback to public flat house in Singapore. The term "ub 1" is not a recognized term in the context of public housing in Singapore, and "singapore" is not a specific location or block number. Therefore, the post does not match any of the categories I was trained on.