Free Trial Korean Class with Teacher Harry Quek introducing Korean alphabets, its etymology and culture daehan Education Centre Pte Ltd https://t.co/3rYnaErHgT
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East Region
[{'url': 'https://t.co/3rYnaErHgT', 'expanded_url': 'https://www.instagram.com/p/B-L-zmEF5Y0/?igshid=9yidc931b3yb', 'display_url': 'instagram.com/p/B-L-zmEF5Y0/…', 'indices': [136, 159]}]
KEMBANGAN
['free', 'trial', 'korean', 'class', 'teacher', 'harry', 'quek', 'introducing', 'korean', 'alphabet', 'etymology', 'culture', 'daehan', 'education', 'centre', 'pte', 'ltd', 'https://t.co/3rynaerhgt']
['teacher', 'teacher', 'culture', 'harry', 'harry', 'harry']
free trial korean class with teacher harry korean etymology culture education
free trial korean class teacher harry quek introducing korean alphabets etymology culture daehan education centre pte ltd
  [
    {"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 free trial Korean class and does not mention any issues or concerns related to maintenance or 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.