8020
A water-powered cogwheel clock was created in China by Yi Xing and Liang Lingzan .
 China, Yi Xing, Liang Lingzan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 China, Yi Xing, Liang Lingzan