22102
Beginning from August 20 , from August 20 to September 10 , the main purpose of the campaign was to sabotage the Zhengtai Railway .
 August 20, August 20 to September 10, the Zhengtai Railway
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:
 August 20, August 20 to September 10, the Zhengtai Railway