I'm at Choa Chu Kang MRT/LRT Interchange (NS4/BP1) - @smrt_singapore in Singapore https://t.co/Fb1lovY7Xm
West Region
[{'url': 'https://t.co/Fb1lovY7Xm', 'expanded_url': 'https://www.swarmapp.com/c/cOE3pLcnQYo', 'display_url': 'swarmapp.com/c/cOE3pLcnQYo', 'indices': [82, 105]}]
CHOA CHU KANG CENTRAL
kang interchange @smrt singapore
choa chu kang mrt lrt interchange ns4 bp1 singapore
  [
    {"relatedness": True, "type": "facility", "explanation": "broken MRT/LRT interchange at NS4 and BP1 in Singapore"},
    ]


    Does the post relate to a maintenance report feedback to public flat house (e.g., a broken facility, an inconvenience, block number or street, requst fixing, etc.)?

The Twitter post "choa chu kang mrt lrt interchange ns4 bp1 singapore" relates to a maintenance report feedback for a broken facility, specifically the MRT/LRT interchange at NS4 and BP1 in Singapore. Therefore, the answer is:

{"relatedness": True, "type": "facility", "explanation": "broken MRT/LRT interchange at NS4 and BP1 in Singapore"}