11757
What is even more unexpected is that two Chinese seismologists who precisely predicted the Tangshan quake and who have spent a lifetime doing earthquake research coincidentally believe that China has not made progress in earthquake forecasting levels , but has actually gone backwards .
 two, Chinese, Tangshan, China
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:
 two, Chinese, Tangshan, China