<|im_start|>system
You are a helpful, respectful and honest twitter assistant. Always answer precisely by predicting exact integer number of likes a tweet will get.<|im_end|>
<|im_start|>user
On 2019-05-20 20:30:21, CPHO_Canada from company tam tweeted. The tweet was "#DYK, by 2036, nearly 1 in 4 Cdns will be 65 or older? As the world’s population ages, it’s more important than ever that physical &amp; social environments support healthy &amp; active aging.  #WHA72 <hyperlink>". The most similar tweets were, 
1. On 2020-01-02 08:00:00, PfizerEUPolicy handle of company pfizer tweeted. The tweet was "#DYK? We're 170 years old! Delivering breakthroughs that change patients' lives. Here's to the next 170 years 🎉 #PfizerProud #PfizerEU <hyperlink>". This tweet got 4 number of likes. 
2. On 2019-05-06 15:03:00, PfizerEUPolicy handle of company pfizer tweeted. The tweet was "By 2050 about 2BN people will be 60+ years old. We’re forging unique partnerships around the world to help them age well. Flu, pneumonia and whooping cough are all passed from younger to older generations but can be prevented by #vaccination. #WeWontRest <hyperlink> <hyperlink>". This tweet got 0 number of likes. 
3. On 2018-04-25 18:07:14, pfizer handle of company pfizer tweeted. The tweet was "#DYK: Immunization helps prevent disease in all age groups across the globe. #WIW2018 #WorldImmunizationWeek2018 <hyperlink>". This tweet got 253 number of likes. 
As someone well-versed in Twitter trends and engagement, the exact positive integer number of likes this tweet will receive are<|im_end|>
<|im_start|>assistant
