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After a season as Mika Häkkinen 's race engineer in , he returned to the McLaren test team in despite rumours linking him with a move to Ferrari .
 Mika Häkkinen, Ferrari
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Mika Häkkinen, Ferrari