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British Super Bike Championship After the departure of James Ellison in 2008 to GSE racing Airwaves Yamaha Team , Karl Harris was taken on to race alongside Stuart Easton to compete for the BSB championship in 2009 .
 James Ellison, Yamaha, Karl Harris, Stuart Easton
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 James Ellison, Yamaha, Karl Harris, Stuart Easton