YESSIRR (at @FitnessFirstSg in Singapore) https://t.co/nBp7L5cmPd
North-East Region
[{'url': 'https://t.co/nBp7L5cmPd', 'expanded_url': 'https://www.swarmapp.com/c/e9fXczWU3NX', 'display_url': 'swarmapp.com/c/e9fXczWU3NX', 'indices': [42, 65]}]
ANG MO KIO TOWN CENTRE
['yessirr', '@fitnessfirstsg', 'singapore', 'https://t.co/nbp7l5cmpd']
[]
@fitnessfirstsg
yessirr singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance report feedback."},
    ]

It seems that the Twitter post "yessirr singapore" does not relate to a maintenance report feedback to public flat house. The post does not mention any specific issues or facilities related to public housing, and does not contain any keywords or hashtags related to maintenance reports or public housing in Singapore. Therefore, the answer is "False" for the question "Does the post relate to a maintenance report feedback to public flat house?"