,-------------.
|decision_tree|
|-------------|
|NODE         |
|first_step   |
`-------------'
               
               
  ,--------.   
  |step    |   
  |--------|   
  |NODE    |   
  |parent  |   
  |heading |   
  |body    |   
  |question|   
  |answers |   
  `--------'   
               
  ,---------.  
  |answer   |  
  |---------|  
  |PARAGRAPH|  
  |title    |  
  |next_step|  
  `---------'