1682
Oulu Airport is the second largest , whilst another 25 airports have scheduled passenger services .
 location: Oulu Airport
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: Oulu Airport 
Answer:
 location: Oulu Airport