Lookie lookie :) it is a bookie 

A teenager discovers his grandfather's secret identity only after his death. A young immigrant to 1940s Singapore is convinced the end-times are nigh. A man is tasked with bringing… https://t.co/b8IDt4bVkU
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Central Region
[{'url': 'https://t.co/b8IDt4bVkU', 'expanded_url': 'https://www.instagram.com/p/B7IrEaOALO0/?igshid=1bmdr8py2mw0h', 'display_url': 'instagram.com/p/B7IrEaOALO0/…', 'indices': [216, 239]}]
BRAS BASAH
['lookie', 'lookie', ':)', 'bookie', 'teenager', 'discovers', "grandfather's", 'secret', 'identity', 'death', 'young', 'immigrant', '1940s', 'singapore', 'convinced', 'end-times', 'nigh', 'man', 'tasked', 'bringing', '…', 'https://t.co/b8idt4bvku']
['secret', 'convinced', 'death', 'death', 'death', 'death', 'death', 'death', 'immigrant', 'death']
bookie grandfather secret identity only after death young immigrant convinced nigh with
lookie lookie bookie teenager discovers grandfather secret identity death young immigrant 1940s singapore convinced endtimes nigh man tasked bringing
  [
    {"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 about a teenager discovering their grandfather's secret identity and the impending end of times, which has no connection to maintenance reports or public flat houses. Therefore, the answer is a JSON object with "relatedness" set to "False", "type" set to "none", and "explanation" set to a brief explanation of why the post is not related to the requested topic.