Happy 56th birthday to Singapore 🇸🇬 @ Singapore https://t.co/Nmtm1Kbg88
Central Region
[{'url': 'https://t.co/Nmtm1Kbg88', 'expanded_url': 'https://www.instagram.com/p/CSUN-oNB80ukTyKqC5eqmDPsnIElY7P6MzcuLI0/?utm_medium=twitter', 'display_url': 'instagram.com/p/CSUN-oNB80uk…', 'indices': [48, 71]}]
MARINA CENTRE
['happy', '56th', 'birthday', 'singapore', '🇸', '🇬', 'singapore', 'https://t.co/nmtm1kbg88']
['happy', 'birthday', 'happy', 'happy', 'birthday', 'happy', 'birthday', 'birthday']
happy birthday
happy 56th birthday singapore 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 relate to a maintenance report feedback to public flat house. The post is simply wishing Singapore a happy 56th birthday, and does not contain any information or context related to maintenance reports or public housing. Therefore, the answer is a JSON object with "relatedness" set to False, "type" set to "none", and "explanation" set to a short explanation of why the post is not related to the requested topic.