Once upon a time... @ Singapore https://t.co/a8I15XyICB
Central Region
[{'url': 'https://t.co/a8I15XyICB', 'expanded_url': 'https://www.instagram.com/p/CKA-40kFQ-m/?igshid=5g3yf4g8qq9h', 'display_url': 'instagram.com/p/CKA-40kFQ-m/…', 'indices': [32, 55]}]
MARINA CENTRE
['upon', 'time', '...', 'singapore', 'https://t.co/a8i15xyicb']
['time']
once upon time
upon time singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance reports."},
    ]

It seems that the Twitter post you provided does not relate to a maintenance report feedback to a public flat house. The term "upon time singapore" does not provide any context or information that suggests otherwise. Therefore, the answer is "relatedness": False.