7652
The reasons for the drop are manifold : both China and Russia are implementing economic reforms , and there are changes in demands for each other 's goods ; changes in the visa system have also brought some effects in contacts between traders of both sides .
 geographical social political: China; geographical social political: Russia
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: China, Russia 
Answer:
 geographical social political: China; geographical social political: Russia