3017
in northern iraq , u . s . warplanes hit targets including a ridge east of mosul , where iraqi troops have been entrenched .
 u . s, mosul, iraqi, iraqi troops, u . s . warplanes, northern iraq, targets including a ridge east of mosul , where iraqi troops have been entrenched, a ridge east of mosul, where
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:
 u . s, mosul, iraqi, iraqi troops, u . s . warplanes, northern iraq, targets including a ridge east of mosul , where iraqi troops have been entrenched, a ridge east of mosul, where