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He eventually turned back at the demand of his homesick troops , dying in Babylon in 323 BC , the city that he planned to establish as his capital , without executing a series of planned campaigns that would have begun with an invasion of Arabia .
 Babylon, Arabia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Babylon, Arabia