Do you think Usain Bolt is better than Yohan Blake?
Yeah I think he is as per the medals Bolt has won
Which race did Usain Bolt perform the best, long or short?
He is best in 100m and 200 meters 
Looks like Usain Bolt has retired. Who other sprinters do you like?
yeah he is retired, I also like Tyson Gay
Which of Usain Bolt and Tyson Gay do you like the best?
First Usain bolt then Tyson Gay
Nice talking to you, goodbye!
okay, pleasure talking to you. goodbye