I'm at Changi in Singapore https://t.co/hVQpMIluNS
<a href="http://foursquare.com" rel="nofollow">Foursquare</a>
East Region
[{'url': 'https://t.co/hVQpMIluNS', 'expanded_url': 'https://www.swarmapp.com/c/75ppMA4Axk1', 'display_url': 'swarmapp.com/c/75ppMA4Axk1', 'indices': [27, 50]}]
CHANGI AIRPORT
changi singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance issues."},
    ]

It seems that the tweet "changi singapore" does not relate to a maintenance report feedback to a public flat house. It is possible that the user is simply mentioning the location Changi in Singapore, or that the tweet is unrelated to any specific topic.