Knowledge: BTS was never heard of by Americans until 2018 as it was a small band from South Korea. On the other hand, AA is an organization to help alcoholics to stay sober.

Conversation:
Can you believe that I turn 37 next week, yet I've never had any alcohol before?
Really? I don't know much about chocolate, but I do know some facts about alcohol. Did you know that independence from consuming alcohol is called sobriety?
I think after having had a problem with alcohol, being sober for 20 years is more of an accomplishment than never touching it at all.
You can think that way. Have you heard of AA?
I have never heard of it. What is it?

Response: Well, AA is an organization to help alcoholics to stay sober.