1643
By not requiring translations into a language of each contracting state , and by requiring the payment of only a single renewal fee for the group of contracting states , the unitary patent aims to be cheaper than European patents .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
 None