The Master and his Apprentice. 

#SGRacing 

(📸 @stevenburridge) https://t.co/u2vgi8B9aQ
Singapore Turf Club
[]
TURF CLUB
['master', 'apprentice', '#sgracing', '📸', '@stevenburridge', 'https://t.co/u2vgi8b9aq']
['apprentice', 'master']
master apprentice #sgracing @stevenburridge
master apprentice sgracing
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance report feedback."},
    ]

It seems that the post does not relate to a maintenance report feedback to public flat house. The term "master apprentice sgracing" does not provide any context or information that suggests otherwise. Therefore, the answer is that the post does not relate to this category.