The signs is where you will be heading
#singaporediscovers @ Waterloo Street https://t.co/Yd9me5otrh
Central Region
[{'url': 'https://t.co/Yd9me5otrh', 'expanded_url': 'https://www.instagram.com/p/CRi5uw1Hyve/?utm_medium=twitter', 'display_url': 'instagram.com/p/CRi5uw1Hyve/…', 'indices': [77, 100]}]
VICTORIA
['sign', 'heading', '#singaporediscovers', 'waterloo', 'street', 'https://t.co/yd9me5otrh']
[]
where will heading #singaporediscovers waterloo street
signs heading singaporediscovers waterloo street
  [
    {"relatedness": True, "type": "facility", "explanation": "broken sign"}
    ]


    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 post mentions "signs heading SingaporeDiscovers Waterloo Street", which suggests that the post is related to a maintenance report feedback for a public facility, specifically a broken sign. Therefore, the answer is:

{"relatedness": True, "type": "facility", "explanation": "broken sign"}