The 11yo Flak Jacket prior to having his first start in Class 5 grade after 7️⃣7️⃣ runs @SGTurfClub 
For @SBaertschiger 

#SGRacing https://t.co/fPYoaAjSzo
Singapore Turf Club
[]
TURF CLUB
['11yo', 'flak', 'jacket', 'prior', 'first', 'start', 'class', '5', 'grade', '7️⃣7️⃣', 'run', '@sgturfclub', '@sbaertschiger', '#sgracing', 'https://t.co/fpyoaajszo']
['start']
flak jacket prior first start class grade after @sgturfclub @sbaertschiger #sgracing
11yo flak jacket prior first start class 5 grade 7 7 runs sgracing
  [
    {"relatedness": False, "type": "none", "explanation": "This post is not related to maintenance report feedback for public flat house."},
    ]

The post does not relate to a maintenance report feedback for public flat house. The term "flak jacket" is likely a reference to a type of clothing, and "sgracing" is likely a misspelling of "sprinting." Therefore, this post is not relevant to the specified topic.