3650
as we continue to watch air force one , now on the ground outside belfast , northern ireland , we ' ll be watching president bush emerge from the plane momentarily .
 belfast , northern ireland, we, we, president, president bush, air force one, the plane, northern ireland
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:
 belfast , northern ireland, we, we, president, president bush, air force one, the plane, northern ireland