Calm before the storm https://t.co/BC2J6X0Dz8
Coastes
[]
SENTOSA
['calm', 'storm', 'https://t.co/bc2j6x0dz8']
['calm', 'storm', 'storm']
calm before storm
calm storm
  [
    {"relatedness": False, "type": "none", "explanation": "This post does not relate to a maintenance report feedback for a public flat house."},
    ]

It seems that the post "calm storm" does not mention anything related to maintenance report feedback for a public flat house. Therefore, the answer is that the post does not relate to this category.