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In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.

Blow dryers were invented around the end of the 19th century. The first model was created by Alexander F. 'Beau' Godefroy in his salon in France in 1890. The handheld, household hair dryer first appeared in 1920. Blow dryers are used in beauty salons by professional stylists and in the household by consumers.
Output:
when did the first blow dryer come out