answer: #Person1# and #Person2# plan to sing karaoke, and #Person1# wants to invite Tom because tom is funny.
documents: #Person1#: Shall we sing with a karaoke?
  #Person2#: Great idea! I do it every so often.
  #Person1#: For us, karaoke is becoming a popular entertainment.
  #Person2#: Yep. If you are a good singer, your audience will feel comfortable, right?
  #Person1#: I can not agree with you more. And if you are an awful one, that will be funny.
  #Person2#: I remembered Tom is always out of tune. We burst into laughter.
  #Person1#: Is that true? Shall we invite him to join with us?
  #Person2#: So tricky!