5143
Such a tree might be compared with Huffman trees , which similarly seek to place frequently used items near the root in order to produce a dense information encoding ; however , Huffman trees store data elements only in leaves , and these elements need not be ordered .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None