High tea at my mansion. @ Yishun https://t.co/na9WvhqNbT
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North Region
[{'url': 'https://t.co/na9WvhqNbT', 'expanded_url': 'https://www.instagram.com/p/CC0V9UpBkuCWEqEHUFo2XTu-Vk_kPzk8xK-1940/?igshid=mv0x9n8ko183', 'display_url': 'instagram.com/p/CC0V9UpBkuCW…', 'indices': [33, 56]}]
YISHUN WEST
['high', 'tea', 'mansion', 'yishun', 'https://t.co/na9wvhqnbt']
[]
high mansion
high tea mansion yishun
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to maintenance report feedback for public flat houses."},
    ]

It seems that the Twitter post "high tea mansion yishun" does not relate to a maintenance report feedback for public flat houses. Therefore, the answer is { "relatedness": False, "type": "none", "explanation": "This is not related to maintenance report feedback for public flat houses." }.