Purple 💜 @ Singapore https://t.co/A0wDmpxZPv
<a href="http://instagram.com" rel="nofollow">Instagram</a>
Central Region
[{'url': 'https://t.co/A0wDmpxZPv', 'expanded_url': 'https://www.instagram.com/p/CA5YBcAh7De/?igshid=1fgtd483te7te', 'display_url': 'instagram.com/p/CA5YBcAh7De/…', 'indices': [21, 44]}]
MARINA CENTRE
['purple', '💜', 'singapore', 'https://t.co/a0wdmpxzpv']
[]
purple
purple singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance issues."},
    ]

It seems that the Twitter post "purple singapore" does not relate to a maintenance report feedback to public flat house. The post does not mention any specific issues or concerns related to public housing, such as broken facilities, inconveniences, or requests for fixing. Therefore, the answer is "relatedness": False, "type": "none", and "explanation": "This is not related to public housing or maintenance issues."