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Nasser said that UNRWA workers in the Palestinian Territories were facing many difficulties and obstacles since the start of the events and that trucks carrying humanitarian aid were being stopped by Israeli forces who also fired at them at times .
 the Palestinian Territories, Palestinian, Israeli, UNRWA, Nasser, UNRWA workers in the Palestinian Territories, humanitarian, Israeli forces who also fired at them at times, who, trucks carrying humanitarian aid, them
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 the Palestinian Territories, Palestinian, Israeli, UNRWA, Nasser, UNRWA workers in the Palestinian Territories, humanitarian, Israeli forces who also fired at them at times, who, trucks carrying humanitarian aid, them