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However , due to their softness and limited hardenability these alloys found little practical use , and were more of a novelty , until the Wright brothers used an aluminium alloy to construct the first airplane engine in 1903 .
 Wright brothers
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Wright brothers