anchor.diff:  }
   ----
   
  -== List
  +== Lists
   
   Next we have the *list* data structure.
   
  
positive.code: ----
  
  
  == Tuple
  
  The *tuple* is the next data structure we'll explore.
  
  
negative.code: With knn we use a *distance* measure to compare vectors of data to find the k nearest neighbors to
  a specific vector.
  
  === Euclidean Distance
  
  The Streaming Expression statistical function library has a function called `distance`. The `distance` function
  computes the Euclidean distance between two vectors. This looks promising for comparing vectors of room rates.
  