I'm at Terminal 4 - @changiairport in Singapore https://t.co/Go4Kjf471Z
<a href="http://foursquare.com" rel="nofollow">Foursquare</a>
East Region
[{'url': 'https://t.co/Go4Kjf471Z', 'expanded_url': 'https://www.swarmapp.com/c/0waU3KzV4By', 'display_url': 'swarmapp.com/c/0waU3KzV4By', 'indices': [48, 71]}]
CHANGI AIRPORT
["i'm", 'terminal', '4', '@changiairport', 'singapore', 'https://t.co/go4kjf471z']
['terminal', 'terminal', 'terminal']
terminal @changiairport
terminal 4 singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance issues."},
    ]

It seems that the Twitter post "terminal 4 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 Terminal 4 in Singapore, which is a transportation hub. Without more context, it is difficult to determine the exact purpose of the post.