PPT https://docs.google.com/presentation/d/1-bSpVktfBYfhrzLF0Dy55oEyq_0N7d8R/edit?usp=sharing&ouid=118389955841692397006&rtpof=true&sd=true
video: https://drive.google.com/file/d/11D97cb-agvMYy45q0J6C2oS2OvF4nBhM/view?usp=sharing
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