I'm at Wok Hey in Singapore https://t.co/mAfh85L1mN
<a href="http://foursquare.com" rel="nofollow">Foursquare</a>
Central Region
[{'url': 'https://t.co/mAfh85L1mN', 'expanded_url': 'https://www.swarmapp.com/c/0bJI13jtyMV', 'display_url': 'swarmapp.com/c/0bJI13jtyMV', 'indices': [28, 51]}]
GEYLANG EAST
["i'm", 'wok', 'hey', 'singapore', 'https://t.co/mafh85l1mn']
[]
wok hey singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance issues."},
    ]

It seems that the tweet "wok hey singapore" is not related to a maintenance report feedback for a public flat house. It is important to note that the term "wok hey" is a colloquialism used in Singapore to express excitement or enthusiasm, and it does not provide any information about maintenance issues or public housing. Therefore, the tweet does not match any of the categories I was trained on.