1644
Over 45 minutes as we watched , 32 patients were delivered here , evaluated and nine operations started ; 29 of those delivered , Marines involved in a firefight in the center of Baghdad .
 Baghdad, we, 32 patients, 29 of those delivered, those delivered, Marines involved in a firefight in the center of Baghdad, here, the center of Baghdad
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 Baghdad, we, 32 patients, 29 of those delivered, those delivered, Marines involved in a firefight in the center of Baghdad, here, the center of Baghdad