Sentosa island in Singapore. @ Singapore https://t.co/rAx9yZhGBV
<a href="http://instagram.com" rel="nofollow">Instagram</a>
Central Region
[{'url': 'https://t.co/rAx9yZhGBV', 'expanded_url': 'https://www.instagram.com/p/CA4buRXnbbJ/?igshid=jhf1o91bfpd4', 'display_url': 'instagram.com/p/CA4buRXnbbJ/…', 'indices': [41, 64]}]
MARINA CENTRE
island
sentosa island singapore singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance issues."},
    ]

It seems that the post does not relate to a maintenance report feedback to public flat house. The post simply mentions "Sentosa Island Singapore" without any context or information that would suggest otherwise. Therefore, the answer is "relatedness": False and "type": "none".