2069
Changhao Li and Changhe Liu achieved victories with advantages of six and a half ' mu ' and seven and a half ' mu ' respectively .
 Changhao Li, Changhe Liu, six and a half, seven and a half
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:
 Changhao Li, Changhe Liu, six and a half, seven and a half