202013
His grandfather , Pei Mei ( 裴昧 ) , served as a guanglu dafu ( 光祿大夫 ) while his father Pei Gui ( 裴珪 ) was a zheng yuanwailang ( 正員外郎 ) .
 Pei, Pei
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pei, Pei