#Ouch. @ Changi Airport Terminal 4 https://t.co/eCstuoj1lZ
East Region
[{'url': 'https://t.co/eCstuoj1lZ', 'expanded_url': 'https://www.instagram.com/p/CJRXPktFnTN/?igshid=kmkv2fo93fgq', 'display_url': 'instagram.com/p/CJRXPktFnTN/…', 'indices': [35, 58]}]
CHANGI AIRPORT
#ouch airport terminal
ouch changi airport terminal 4
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to a maintenance report for a public flat house."},
    ]

It seems that the Twitter post "ouch changi airport terminal 4" does not relate to a maintenance report feedback for a public flat house. The post does not mention any specific issue or facility related to a public flat house, and therefore does not match any of the categories in the question.