answer: Mr. Nakamura helps #Person1# learn about the way to eat sushi and the use of wasabi because they work in the same company.
documents: #Person1#: How do you eat sushi, Mister Nakamura?
  #Person2#: I usually use chopsticks but some people prefer just using hands.
  #Person1#: You can eat with your hands at the restaurant?
  #Person2#: Yeah, it's totally acceptable in the traditional sushi restaurant.
  #Person1#: Hmm, interesting. So do I just eat it straight?
  #Person2#: Well, I like to eat it straight and enjoy the natural flavor of the fish, but you can always go with wasabi.
  #Person1#: Wasabi? What's wasabi?
  #Person2#: Wasabi is a sauce, which gives sushi a spicy flavor.
  #Person1#: Oh, you mean the green stuff, which always makes my tears come out?
  #Person2#: Correct. Some restaurants actually give you wasabi along with your sushi dish so that you can control the hotness.
  #Person1#: That's considerate. You've really taught me so much about Japanese culture. Thank you, Mister Nakamura.
  #Person2#: Don't mention it. We should help each other since we work in the same company now.