I'm at KB 1 in Singapore https://t.co/cM7HuzGUc5
<a href="http://foursquare.com" rel="nofollow">Foursquare</a>
East Region
[{'url': 'https://t.co/cM7HuzGUc5', 'expanded_url': 'https://www.swarmapp.com/c/6RAaLFJgrZf', 'display_url': 'swarmapp.com/c/6RAaLFJgrZf', 'indices': [25, 48]}]
KAKI BUKIT
["i'm", 'kb', '1', 'singapore', 'https://t.co/cm7huzguc5']
[]
kb 1 singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance issues."},
    ]

It seems that the Twitter post "kb 1 singapore" does not relate to a maintenance report feedback to a public flat house. The term "kb" is not a commonly used abbreviation in the context of public housing in Singapore, and the post does not provide any specific details or information that would suggest otherwise. Therefore, the answer is "False" for the question "Does the post relate to a maintenance report feedback to public flat house?"