5754
Although the early 2000 s revival of roller derby was initially all-female , some leagues later introduced all-male teams and all-gender games ; there were over 140 junior roller derby programs in the United States , and many more around the world .
 location: United States
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: United States