At #launch site @ Singapore https://t.co/u3nTlGkHY0
Central Region
[{'url': 'https://t.co/u3nTlGkHY0', 'expanded_url': 'https://www.instagram.com/p/CHrZP9pJwvN/?igshid=1n2ephwn5jepn', 'display_url': 'instagram.com/p/CHrZP9pJwvN/…', 'indices': [28, 51]}]
MARINA CENTRE
#launch site
launch site singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to maintenance report feedback for public flat houses."},
    ]

It seems that the Twitter post "launch site singapore" is not related to maintenance report feedback for public flat houses in Singapore. Therefore, the answer is "False" for the "relatedness" field, and the "type" field is set to "none" because it is not related to any specific category. The "explanation" field provides a brief explanation that the post is not related to maintenance report feedback for public flat houses.