2548
The income of the vast majority of these 20 , of upper - class citizens in China is basically unreported income ; the proportion of their income that comes from fully declared earnings is a negligible part of their wealth .
 cardinal: 20; geographical social political: China
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: 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:
 cardinal: 20; geographical social political: China