Just posted a photo @ National Heart Centre Singapore https://t.co/thgF3MOcp2
Central Region
[{'url': 'https://t.co/thgF3MOcp2', 'expanded_url': 'https://www.instagram.com/p/CWzFaT_hLyb/?utm_medium=twitter', 'display_url': 'instagram.com/p/CWzFaT_hLyb/…', 'indices': [54, 77]}]
SINGAPORE GENERAL HOSPITAL
['posted', 'photo', 'national', 'heart', 'centre', 'singapore', 'https://t.co/thgf3mocp2']
[]
just posted photo national heart
posted photo national heart centre singapore
  [
    {"relatedness": False, "type": "none", "explanation": "The post does not relate to a maintenance report feedback for a public flat house."},
    ]

It seems that the post does not mention anything related to maintenance report feedback for a public flat house in Singapore. The post only mentions a photo of the National Heart Centre in Singapore, which is likely a medical facility. Therefore, the answer is "False" for the relatedness question.