I'm at Chi Cha San Chen in Tampines, Singapore https://t.co/E18UFoHjLD
<a href="http://foursquare.com" rel="nofollow">Foursquare</a>
East Region
[{'url': 'https://t.co/E18UFoHjLD', 'expanded_url': 'https://www.swarmapp.com/c/ilkveVwXsY8', 'display_url': 'swarmapp.com/c/ilkveVwXsY8', 'indices': [47, 70]}]
TAMPINES EAST
["i'm", 'chi', 'cha', 'san', 'chen', 'tampines', 'singapore', 'https://t.co/e18ufohjld']
[]
chen
chi cha san chen tampines singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance report feedback."},
    ]

The provided Twitter post does not seem to be related to a maintenance report feedback for a public flat house in Singapore. The post "chi cha san chen tampines singapore" does not contain any specific keywords or information that suggests it is a maintenance report feedback. Therefore, the answer is "False" for the "relatedness" field, and the "type" field is set to "none" since it is not related to any specific category. The "explanation" field provides a brief explanation for why the post is not related to the given category.