Sunyi sepi airport..
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Terminal 4 Departure Hall
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CHANGI AIRPORT
airport
sunyi sepi airport
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance issues."},
    ]

It seems that the Twitter post "sunyi sepi airport" does not relate to a maintenance report feedback to public flat house. It is not clear what this post refers to, as it does not provide any context or information about a specific issue or location. Therefore, I have marked the "relatedness" field as "False" and the "type" field as "none", as there is no obvious category or type of issue that this post belongs to.