answer: Bob reminds #Person1# to choose words carefully while talking to the supervisor.
documents: #Person1#: Bob, did you see our supervisor? I need him to sign this paper.
  #Person2#: He is in his office, but you'd better choose your words carefully while talking to him.
  #Person1#: What's up?
  #Person2#: Nothing. But he is in a bad mood today.
  #Person1#: Thanks for the warning.
  #Person2#: That's all right.