I'm at Cosmetics &amp; Perfumes by The Shilla Duty Free https://t.co/u4A5o0AGwA
East Region
[{'url': 'https://t.co/u4A5o0AGwA', 'expanded_url': 'https://www.swarmapp.com/c/4xbWqXo8XLW', 'display_url': 'swarmapp.com/c/4xbWqXo8XLW', 'indices': [56, 79]}]
CHANGI AIRPORT
["i'm", 'cosmetic', 'perfume', 'shilla', 'duty', 'free', 'https://t.co/u4a5o0agwa']
[]
shilla duty free
cosmetics amp perfumes shilla duty free
  [
    {"relatedness": False, "type": "none", "explanation": "This post is not related to maintenance report feedback for public flat house."},
    ]

The given Twitter post does not relate to a maintenance report feedback for a public flat house. The post mentions "cosmetics amp perfumes shilla duty free", which does not pertain to any maintenance issue or feedback for a public flat house. Therefore, the answer is a JSON object with "relatedness" set to False, "type" set to "none", and "explanation" set to a short explanation indicating that the post is not related to the requested topic.