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Prior to the construction of the barrier , Bir Nabala was a commercial center linking Jenin and Tulkarm with the Jerusalem area and the town contained about 600 shops and six tyre factories .
 Bir Nabala, Jenin, Tulkarm, Jerusalem
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bir Nabala, Jenin, Tulkarm, Jerusalem