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Marmion Avenue is a 38 kilometre arterial road in the northern coastal suburbs of Perth , Western Australia , linking Trigg in the south with Yanchep in the north .
 Perth , Western Australia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Perth , Western Australia