43979
In February , unable to defend western Baghdad , the caliph abandoned the western side and ordered all the bridges over the Tigris river , which separates the western side of Baghdad from its eastern side , to be destroyed .
 Baghdad, Baghdad
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Baghdad, Baghdad