I'm at @ShakeShack in Marina, Singapore https://t.co/S2U3VyyWBQ
Central Region
[{'url': 'https://t.co/S2U3VyyWBQ', 'expanded_url': 'https://www.swarmapp.com/c/bR9XladlDiT', 'display_url': 'swarmapp.com/c/bR9XladlDiT', 'indices': [40, 63]}]
MARINA SOUTH
["i'm", '@shakeshack', 'marina', 'singapore', 'https://t.co/s2u3vyywbq']
[]
@shakeshack marina
marina singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance issues."},
    ]

It seems that the tweet "marina singapore" does not relate to a maintenance report feedback to public flat house. It is possible that the user is simply mentioning the location of Marina Bay in Singapore, or referring to a different topic altogether.