I'm at Singapore @ChangiAirport in Singapore https://t.co/CkOPIc97HD
East Region
[{'url': 'https://t.co/CkOPIc97HD', 'expanded_url': 'https://www.swarmapp.com/c/hAFxVmsp2gB', 'display_url': 'swarmapp.com/c/hAFxVmsp2gB', 'indices': [45, 68]}]
CHANGI AIRPORT
["i'm", 'singapore', '@changiairport', 'singapore', 'https://t.co/ckopic97hd']
[]
@changiairport
singapore singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance report feedback."},
    ]

It seems that the Twitter post does not relate to a maintenance report feedback to public flat house in Singapore. The post simply says "singapore singapore" and does not contain any information or context that suggests otherwise. Therefore, the answer is that the post does not relate to this category.