20043
This review aims to describe and discuss , through focused examples , the great potential of these materials in the medical field , with the aim to encourage further research to implement applications , which today are still rare .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None