3724
In 1920 , two local oilmen invited Chicago aircraft builder Emil " Matty " Laird to manufacture his designs in Wichita , leading to the formation of the Swallow Airplane Company .
 location: Chicago; person: Emil " Matty " Laird; location: Wichita; organization: Swallow Airplane Company
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:
 location: Chicago; person: Emil " Matty " Laird; location: Wichita; organization: Swallow Airplane Company