2994
Construction of steel hangars and a dirt air strip 1917 – 1918 ; a portion of Ft Stotsenburg officially set aside for the Aviation Section of the Signal Corps and named Clark Fld , September 1919 .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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