I'm at FOC Sentosa https://t.co/RJyazjb4kt
Central Region
[{'url': 'https://t.co/RJyazjb4kt', 'expanded_url': 'https://www.swarmapp.com/c/cGPHDU7GPRE', 'display_url': 'swarmapp.com/c/cGPHDU7GPRE', 'indices': [19, 42]}]
SENTOSA
["i'm", 'foc', 'sentosa', 'https://t.co/rjyazjb4kt']
[]
foc sentosa
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance report feedback."},
    ]

It seems that the Twitter post "foc sentosa" does not relate to a maintenance report feedback to public flat house. It is not clear what the post is referring to, and it does not contain any information that suggests it is related to public housing or maintenance reports. Therefore, the answer is that the post does not relate to a maintenance report feedback to public flat house.