250203
This opened in July 1939 , when Slingsby Sailplanes Ltd was founded .
 person: Slingsby
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: Slingsby 
Answer:
 person: Slingsby