20036
The Japanese have watched the Europeans and Canadians stumble in the U.S. market , and they fret that business practices that have won them huge profits at home wo n't translate into success in the U.S. .
 Japanese, Europeans, Canadians, U.S., U.S.
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
Answer:
 Japanese, Europeans, Canadians, U.S., U.S.