I’m back (@ Singapore @ChangiAirport in Singapore) https://t.co/iRt3j92O9s
<a href="http://foursquare.com" rel="nofollow">Foursquare</a>
East Region
[{'url': 'https://t.co/iRt3j92O9s', 'expanded_url': 'https://www.swarmapp.com/c/7RQRj8HDF0c', 'display_url': 'swarmapp.com/c/7RQRj8HDF0c', 'indices': [51, 74]}]
CHANGI AIRPORT
['’', 'back', 'singapore', '@changiairport', 'singapore', 'https://t.co/irt3j92o9s']
[]
back @changiairport
back singapore singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance issues."},
    ]

It seems that the tweet does not relate to a maintenance report feedback to public flat house in Singapore. The tweet simply says "back singapore" without providing any context or information related to maintenance issues. Therefore, the answer is "relatedness": False, and the type is "none" because it is not related to any specific category.