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Skirmishes and battles between early European settlers and indigenous Australians which occurred during this period may not all be classified as " racially motivated " violence however , given that they were very often punitive or defensive attacks by one side or other engaged in a drawn out competition for land , resources and sites of cultural significance .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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