11000
Not one of the Lu jiatuo Mine 's underground personnel had been lost ; more than a thousand people escaped death deep underground in this dangerous situation .
 the Lu jiatuo Mine 's, more than a thousand
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:
 the Lu jiatuo Mine 's, more than a thousand