Here we go ! @ Grab Singapore https://t.co/bZHV454eAI
<a href="http://instagram.com" rel="nofollow">Instagram</a>
Central Region
[{'url': 'https://t.co/bZHV454eAI', 'expanded_url': 'https://www.instagram.com/p/B-UKa5IHdyG/?igshid=u9sxoost0xg0', 'display_url': 'instagram.com/p/B-UKa5IHdyG/…', 'indices': [30, 53]}]
UPPER THOMSON
['go', 'grab', 'singapore', 'https://t.co/bzhv454eai']
['grab', 'grab']
here grab
go grab singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to maintenance report feedback for public flat house."},
    ]

It seems that the Twitter post "go grab singapore" does not relate to a maintenance report feedback for a public flat house. It is not clear what the post is referring to, and it does not contain any information that would indicate it is a maintenance report. Therefore, the answer is that the post does not relate to a maintenance report feedback for a public flat house.