What a difference a few weeks of less pollution makes.
#lockdownnotes 
#covid19sg @ Singapore https://t.co/DGYeYTCtcr
<a href="http://instagram.com" rel="nofollow">Instagram</a>
Central Region
[{'url': 'https://t.co/DGYeYTCtcr', 'expanded_url': 'https://www.instagram.com/p/CA7mLs0nRXk/?igshid=78sdwxfgkkcn', 'display_url': 'instagram.com/p/CA7mLs0nRXk/…', 'indices': [94, 117]}]
MARINA CENTRE
['difference', 'week', 'le', 'pollution', 'make', '#lockdownnotes', '#covid19sg', 'singapore', 'https://t.co/dgyeytctcr']
['pollution', 'pollution']
what difference less pollution #lockdownnotes #covid  sg
difference weeks less pollution makes lockdownnotes covid19sg singapore
  [
    {"relatedness": True, "type": "facility", "explanation": "broken facility (pollution)"},
    {"relatedness": True, "type": "inconvenience", "explanation": "inconvenience caused by pollution"},
    {"relatedness": False, "type": "none", "explanation": "not related to maintenance report or public flat house"}]

The post relates to a maintenance report feedback to public flat house in Singapore, specifically regarding the issue of pollution. The word "difference" in the tweet suggests that the speaker has noticed a change or difference in the level of pollution during the COVID-19 pandemic, which is likely a concern for public flat house residents. The term "lockdownnotes" in the tweet may refer to the COVID-19 pandemic and the measures taken to contain it, including lockdowns and social distancing measures.