text: Enlist all topics that are mentioned in the feedback and it's sentiment. Possible topics:  
  - 1. Fruits.
  - 2. Boxes. 
  Topics must not contains anything else. No extra words. If feedback dose not contains topic write "none"
  ###
  feedback: This box is huge and usefull.
  topics: 1. Box (positive).
  ###
  feedback: I love apple.
  topics: 1. Fruits (positive).
  ###
  feedback: I hate this box. Its is empty.
  topics: 1. Box (negative).
  ###
  feedback: this aswesome box contains rooten apple.
  topics: 1. Box (positive), 2. Fruits (negative).
  ###
  feedback: banana is fresh.
  topics: