I'm at grin affair in Singapore https://t.co/89yFp3rrqK
<a href="http://foursquare.com" rel="nofollow">Foursquare</a>
Central Region
[{'url': 'https://t.co/89yFp3rrqK', 'expanded_url': 'https://www.swarmapp.com/c/kjDlTjcZFmk', 'display_url': 'swarmapp.com/c/kjDlTjcZFmk', 'indices': [32, 55]}]
BISHAN EAST
["i'm", 'grin', 'affair', 'singapore', 'https://t.co/89yfp3rrqk']
['grin', 'grin', 'grin', 'grin', 'grin']
grin affair
grin affair singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This post does not relate to a maintenance report feedback for a public flat in Singapore."},
    ]

It seems that the post you provided does not contain any information related to a maintenance report feedback for a public flat in Singapore. The term "grin affair" is not a common term in Singaporean context, and it is unlikely that it refers to a maintenance issue in a public flat. Therefore, I have marked the relatedness as "False" and the type as "none" in the output.