answer: Sally congratulates Jack on the fact that Jack's team won the game.
documents: #Person1#: Hello, Jack. Congratulations. Your team won the game.
  #Person2#: Thank you, Sally. You watched the game, didn't you?
  #Person1#: Of coures. Your football team did so well. The third team goal, especially, was really good.
  #Person2#: Yes, but it wasn't easy to win, the visiting team was really strong.
  #Person1#: It was, but your team was even stronger. Your coach did a good job, and all of the players did a good job, too.
  #Person2#: Thank you very much.
  #Person1#: When is your next match?
  #Person2#: On Friday, next week.