2318
U . S . aircraft bombed Iraqi tanks holding bridges close to the city .
 U . S, Iraqi, the city, bridges close to the city, U . S . aircraft, Iraqi tanks
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, Iraqi, the city, bridges close to the city, U . S . aircraft, Iraqi tanks