51533
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 .
 person: Wright brothers
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Wright brothers 
Answer:
 person: Wright brothers