Just posted a photo @ The Istana, Singapore - Official Residence of the President of Singapore https://t.co/ca57hinnKd
Central Region
[{'url': 'https://t.co/ca57hinnKd', 'expanded_url': 'https://www.instagram.com/p/CLyDWLNnwJ6anU1feYblAu2WHywQZ-kYMPwQkk0/?igshid=1pzmdduue1cpq', 'display_url': 'instagram.com/p/CLyDWLNnwJ6a…', 'indices': [95, 118]}]
ISTANA NEGARA
['posted', 'photo', 'istana', 'singapore', 'official', 'residence', 'president', 'singapore', 'https://t.co/ca57hinnkd']
['official', 'president', 'president']
just posted photo official residence president
posted photo istana singapore official residence president 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 a photo of Istana Singapore, which is the official residence of the President of Singapore. Therefore, the answer is a JSON object with "relatedness" set to "False", "type" set to "none", and "explanation" set to a short explanation that the post is not related to maintenance report feedback for public flat house.