The Pfizer Inc of the United States of America (USA) and its partner BioNTech of Germany completed the phase 3 trial of their COVID-19 vaccine candidate, BNT162b2 against SARS-CoV-2 with 95% effective success rate.
A man walks 5 kilometre towards South and then turns to the right. After walking 3 kilometre, he turns to the left and walks 5 kilometre. Now in which direction is he from the starting point?