Create a lambda function that takes one parameter (a) and returns it.
a
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x = w3exercise_input_no_0 w3exercise_input_no_1 w3exercise_input_no_2 w3exercise_input_no_3
w3exercise_input_no_0
w3exercise_input_no_1
w3exercise_input_no_2
w3exercise_input_no_3
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