Singapore: 7:21pm: sunset
<a href="http://twitter.com/WorldCities/cities" rel="nofollow">World Cities</a>
North-East Region
[]
SEMBAWANG HILLS
['singapore', '7:21', 'pm', 'sunset']
['sunset', 'sunset']
sunset
singapore 7 21pm sunset
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance report feedback."},
    ]

The Twitter post "singapore 7 21pm sunset" does not relate to a maintenance report feedback to public flat house. It is simply a mention of the time of sunset in Singapore. Therefore, the answer is { "relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance report feedback." }