I'm at Serfing in Singapore, SG https://t.co/3txMiBi7Wb
Central Region
[{'url': 'https://t.co/3txMiBi7Wb', 'expanded_url': 'https://www.swarmapp.com/c/1FLRRuN6FSB', 'display_url': 'swarmapp.com/c/1FLRRuN6FSB', 'indices': [32, 55]}]
BOON KENG
["i'm", 'serfing', 'singapore', 'sg', 'https://t.co/3txmibi7wb']
[]
serfing singapore sg
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance reports."},
    ]

It seems that the Twitter post "serfing singapore sg" does not relate to a maintenance report feedback to public flat house. The post does not contain any information that suggests it is related to public housing or maintenance reports. Therefore, the answer is "False" for the "relatedness" field, and the "type" field is set to "none" because it is not related to any specific category. The "explanation" field is set to a brief explanation of why the post is not related to the requested topic.