Sergey Brin: Google co-founder sets up family firm in Singapore https://t.co/zMcacqGbBe @AIMSImmigrate
AIMS Immigration Specialist
[{'url': 'https://t.co/zMcacqGbBe', 'expanded_url': 'https://www.bbc.com/news/business-55914177', 'display_url': 'bbc.com/news/business-…', 'indices': [64, 87]}]
MARYMOUNT
['sergey', 'brin', 'google', 'co-founder', 'set', 'family', 'firm', 'singapore', 'https://t.co/zmcacqgbbe', '@aimsimmigrate']
[]
brin family firm @aimsimmigrate
sergey brin google cofounder sets family firm singapore
  [
    {"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 mentions Sergey Brin, a co-founder of Google, setting up a family firm in Singapore, but it does not contain any information related to maintenance report feedback for public housing. Therefore, the answer is a JSON object with "relatedness" set to False, "type" set to "none", and "explanation" set to a short explanation of why the post is not related to the requested topic.