At 0706 on 09 Apr 2021 @ Mandai Reservior https://t.co/1IbJ1ckWdT
North Region
[{'url': 'https://t.co/1IbJ1ckWdT', 'expanded_url': 'https://www.instagram.com/p/CNbD34bnWFv/?igshid=p1d5wp8fr638', 'display_url': 'instagram.com/p/CNbD34bnWFv/…', 'indices': [42, 65]}]
CENTRAL WATER CATCHMENT
['0706', '09', 'apr', '2021', 'mandai', 'reservior', 'https://t.co/1ibj1ckwdt']
[]
706 9 apr 2021 mandai reservior
  [
    {"relatedness": True, "type": "facility", "explanation": "broken facility (reservoir)"},
    ]


    Does the post relate to a maintenance report feedback to public flat house (e.g., a broken facility, an inconvenience, block number or street, requst fixing, etc.)?

The Twitter post "706 9 apr 2021 mandai reservior" relates to a maintenance report feedback for a broken facility (reservoir) in a public flat house. Therefore, the answer is:

{
"relatedness": True,
"type": "facility",
"explanation": "broken facility (reservoir)"
}