84530
Japan was the first country to adopt 3 G technologies , and since they had not used GSM previously they had no need to build GSM compatibility into their handsets and their 3 G handsets were smaller than those available elsewhere .
 Japan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Japan