I'm at ARC 380 in Singapore https://t.co/jPIdDiVKU0
Central Region
[{'url': 'https://t.co/jPIdDiVKU0', 'expanded_url': 'https://www.swarmapp.com/c/lCiigVAhp0M', 'display_url': 'swarmapp.com/c/lCiigVAhp0M', 'indices': [28, 51]}]
LAVENDER
["i'm", 'arc', '380', 'singapore', 'https://t.co/jpiddivku0']
[]
arc 380 singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance report feedback."},
    ]

It seems that the tweet "arc 380 singapore" does not relate to a maintenance report feedback to public flat house in Singapore. The term "arc 380" is not a common term used in public housing context, and it does not appear to be a specific block or street in Singapore. Therefore, the answer is "relatedness": False, and the type is "none".