6220
He returned to Borussia Dortmund for the 1986 – 87 season .
 organization: Borussia Dortmund
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: Borussia Dortmund 
Answer:
 organization: Borussia Dortmund