137563
This led to some ill-feeling in the already crowded emotions of the conflict on the island , and perhaps was highlighted when Northern Ireland 's community 's Ulster Tower Thiepval in France was one of the first memorials erected .
 Northern Ireland, France
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Northern Ireland, France