I'm grateful to have received a tip from a kind customer today. @ Singapore https://t.co/uwTabXaz5a
<a href="http://instagram.com" rel="nofollow">Instagram</a>
Central Region
[{'url': 'https://t.co/uwTabXaz5a', 'expanded_url': 'https://www.instagram.com/p/CAJ5pzQnY1A/?igshid=naanes5odmoj', 'display_url': 'instagram.com/p/CAJ5pzQnY1A/…', 'indices': [76, 99]}]
MARINA CENTRE
["i'm", 'grateful', 'received', 'tip', 'kind', 'customer', 'today', 'singapore', 'https://t.co/uwtabxaz5a']
['kind', 'kind', 'grateful', 'received', 'kind', 'customer']
grateful have received from kind customer today
grateful received tip kind customer today singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This post is not related to maintenance report feedback for public flat house."},
    ]

The given Twitter post does not seem to be related to a maintenance report feedback for a public flat house. The post is expressing gratitude for a kind customer in Singapore, and does not mention any issues or concerns related to maintenance or infrastructure. 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.