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El-Gabal el-Ahmar is located today within the boundaries of modern-day Cairo , in the area of Nasr City , ( 30.05 N , 31.3 E ) .
 Cairo, Nasr City
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Cairo, Nasr City