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Four U . S . soldiers from the 3rd Infantry Division manning a checkpoint near the town of Najaf killed today in an apparent suicide bombing .
 geographical social political: U . S; geographical social political: the town of Najaf; geographical social political: Najaf; organization: the 3rd Infantry Division; person: Four U . S . soldiers from the 3rd Infantry Division manning a checkpoint near the town of Najaf; facility: a checkpoint near the town of Najaf
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 geographical social political: U . S; geographical social political: the town of Najaf; geographical social political: Najaf; organization: the 3rd Infantry Division; person: Four U . S . soldiers from the 3rd Infantry Division manning a checkpoint near the town of Najaf; facility: a checkpoint near the town of Najaf