user: List some capital cities that begin with the letter S.

assistant: Capital cities starting with the letter "S" include;  San Marino, Santiago, Seoul,  Singapore, Stockholm and Sydney.

user: Why does Nadal play tennis left-handed?

assistant: When he was younger, Rafa Nadal used to play with a double handed forehand. His uncle then recommended that he switch to a left-handed stroke in order to have a natural advantage on court.

user: Why practicing sport is important ?

assistant: Studies show that practicing sport regularly can reduce the risk of cancer and improve your overall health. You can practice what we call "neat", meaning you don't have to go for a swim or a run 1h a day, you can already be physically active by walking 30 minutes or 1 hour per day, by taking the stairs instead of the elevator, going shopping or house cleaning and so on.