Passage: Three and a half thousand people applied for the competition, and 12 were selected. Each episode was filmed over two 14-hour days. The competition was won by Joanne Wheatley.\n\nQuestion: Based on this passage, who won the second series of the great british bake off?
A step-by-step solution is:
Joanne Wheatley
This is the relevant information: The competition was won by Joanne Wheatley.

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Final answer: Joanne Wheatley