How long have you not watched the concert?

#u2 #thejoshuatreetour2019 #u2singapore @ National Stadium, Singapore https://t.co/zpi4KWOUBq
Central Region
[{'url': 'https://t.co/zpi4KWOUBq', 'expanded_url': 'https://www.instagram.com/p/CKCCQI0MDBK/?igshid=1v3suup71n645', 'display_url': 'instagram.com/p/CKCCQI0MDBK/…', 'indices': [114, 137]}]
TANJONG RHU
['long', 'watched', 'concert', '#u2', '#thejoshuatreetour2019', '#u2singapore', 'national', 'stadium', 'singapore', 'https://t.co/zpi4kwoubq']
['long']
long have watched concert #u singapore national stadium
long watched concert u2 thejoshuatreetour2019 u2singapore national stadium 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 relate to a maintenance report feedback for a public flat house. The post is about a concert event that took place in Singapore, 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.