50
The establishment of the temple coincided with the development of Chiang Saen as a main centre of the Lanna kingdom by King Saen Phu , who ruled from 1325 to 1334 .
 Chiang Saen, Saen
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Chiang Saen, Saen