169986
Shifting political and economic alliances pushed and pulled various popes of that century from Rome , taking refuge in other , not invariably hospitable , Italian city-states like Perugia and Orvieto .
 Perugia, Orvieto
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Perugia, Orvieto