I'm at UB. One in Singapore https://t.co/OoMSaktnJO
Central Region
[{'url': 'https://t.co/OoMSaktnJO', 'expanded_url': 'https://www.swarmapp.com/c/a5l5nOU9o0M', 'display_url': 'swarmapp.com/c/a5l5nOU9o0M', 'indices': [28, 51]}]
KAMPONG UBI
["i'm", 'ub', 'one', 'singapore', 'https://t.co/oomsaktnjo']
[]
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" is not a common term used in Singapore's public housing context, and the mention of "Singapore" does not provide any specific information about a particular block or street. Therefore, the post does not meet the criteria for a maintenance report feedback to public flat house.