347339
The league was founded in 2006 , and joined the Women 's Flat Track Derby Association ( WFTDA ) in 2009 as a South Central Region league .
 organization: Women 's Flat Track Derby Association
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: Women 's Flat Track Derby Association 
Answer:
 organization: Women 's Flat Track Derby Association