Gunman Kills Five Then Himself in U.K. City Shooting https://t.co/SjN4OSGmuP
North-East Region
[{'url': 'https://t.co/SjN4OSGmuP', 'expanded_url': 'http://dlvr.it/S5YCk2', 'display_url': 'dlvr.it/S5YCk2', 'indices': [53, 76]}]
SERANGOON GARDEN
['gunman', 'kill', 'five', 'u', 'k', 'city', 'shooting', 'https://t.co/sjn4osgmup']
['kill', 'shooting', 'kill', 'shooting', 'kill', 'shooting']
gunman five then himself city shooting
gunman kills 5 k city shooting
  [
    {"relatedness": False, "type": "none", "explanation": "This post does not relate to a maintenance report for a public flat house."},
    ]

The provided Twitter post does not mention anything related to a maintenance report or public flat house, so the answer is that the post does not relate to a maintenance report feedback to public flat house.