I'm at Serfing in Singapore, SG https://t.co/iNNfUKuIUL
Central Region
[{'url': 'https://t.co/iNNfUKuIUL', 'expanded_url': 'https://www.swarmapp.com/c/ce0Q75y1mVm', 'display_url': 'swarmapp.com/c/ce0Q75y1mVm', 'indices': [32, 55]}]
BOON KENG
["i'm", 'serfing', 'singapore', 'sg', 'https://t.co/innfukuiul']
[]
serfing singapore sg
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance issues."},
    ]

It seems that the Twitter post "serfing singapore sg" does not relate to a maintenance report feedback to a public flat house. The post does not mention any specific issues or facilities related to public housing, and does not appear to be a complaint or feedback of any kind. Therefore, the answer is "relatedness": False, and the type is "none".