2582
The six nations contributing troops are Italy , Spain , Ukraine , Denmark , the Netherlands and Bulgaria , the official said .
 The six nations contributing troops, Italy, Spain, Ukraine, Denmark, the Netherlands, Bulgaria, troops, the official
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:
 The six nations contributing troops, Italy, Spain, Ukraine, Denmark, the Netherlands, Bulgaria, troops, the official