Just posted a photo @ Sandy Island at Sentosa Cove Singapore https://t.co/lf9WrBHhPT
<a href="http://instagram.com" rel="nofollow">Instagram</a>
North-East Region
[{'url': 'https://t.co/lf9WrBHhPT', 'expanded_url': 'https://www.instagram.com/p/CC0HCcaHfIv/?igshid=wsr1e0ynlcjq', 'display_url': 'instagram.com/p/CC0HCcaHfIv/…', 'indices': [61, 84]}]
TAI SENG
['posted', 'photo', 'sandy', 'island', 'sentosa', 'cove', 'singapore', 'https://t.co/lf9wrbhhpt']
['cove', 'cove', 'cove', 'cove', 'cove']
just posted photo sandy island cove
posted photo sandy island sentosa cove singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This post does not relate to a maintenance report for a public flat in Singapore."},
    ]

It seems that the post does not mention anything related to maintenance report feedback for a public flat in Singapore. The post simply shares a photo of Sandy Island and Sentosa Cove in Singapore, which are popular tourist destinations. Therefore, the answer is "relatedness": False, "type": "none", and "explanation": "This post does not relate to a maintenance report for a public flat in Singapore."