81792
Later structures include a big masonry church constructed by the Ethiopian Emperor Yohannes I and the mausoleum of the Emperor Iyasu I .
 Yohannes I, Iyasu I
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Yohannes I, Iyasu I