Serum Institute Expects India-Astra Vaccine Pricing Deal in Days https://t.co/aDXtwTWnIl
North-East Region
[{'url': 'https://t.co/aDXtwTWnIl', 'expanded_url': 'http://dlvr.it/Rpqx6x', 'display_url': 'dlvr.it/Rpqx6x', 'indices': [65, 88]}]
SERANGOON GARDEN
['serum', 'institute', 'expects', 'india-astra', 'vaccine', 'pricing', 'deal', 'day', 'https://t.co/adxtwtwnil']
['deal', 'institute', 'deal', 'serum', 'vaccine', 'deal', 'deal', 'deal']
serum institute vaccine deal days
serum institute expects indiaastra vaccine pricing deal days
  [
    {"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 "serum institute" and "Indiaastra vaccine pricing deal days", which do not appear to be related 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 short explanation indicating that the post is not related to the requested topic.