Knowledge: Soccer is a sport that only the goalkeeper is allowed to use his hand. In Tennis, arm strength is vital to generate speed, power and endurance while serving the ball.

Conversation:
I've never played the game Blackjack. Can you tell me anything about it?
Sure, I know the game has the objective of beating the dealer
Interesting, and how do you beat the dealer?
Well, for the dealer to be beat players each receive two cards, that are facing up or down, according to the table and casino you seat
So you are really just playing against the dealer and no one else? Boring! That's why I enjoy Baccarat more
I can't confirm that, but in Blackjack, I know that the ones playing can draw more cards to get a better hand
That's really cool! What else can you tell me
In Blackjack, you aim to have a hand value that is closer to 21
It feels a little complex than I thought. Do you know a sport that is mainly played with hands?

Response: Sure! Tennis is mainly played with hands, where arm strength is vital to generate speed, power and endurance while serving the ball.