25557
Backstreet Boys and NSYNC became the two biggest boy bands in the late 1990 s until the early 2000 s , and Backstreet Boys went on to become the best-selling boy band in history with over 100 million records sold .
 organization: Backstreet Boys; organization: NSYNC; organization: Backstreet Boys
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: Backstreet Boys, NSYNC, Backstreet Boys 
Answer:
 organization: Backstreet Boys; organization: NSYNC; organization: Backstreet Boys