context: The National Basketball Association (全美 籠 球 協會, N </ b> ational B </ b> asketball A </ b> ssociation, NBA) is an American professional basketball federation. The NBA League is considered one of the top four sports leagues in the United States, along with MLB in baseball, NFL in American football and NHL in ice hockey. It is composed of 30 teams as of July 2006, and opens at the beginning of November of each year to play 82 regular season games per team. . NBA's catchphrase is "Where amazing happens."
question: What is the abbreviation for NBA?
answers.text: N </ b> ational B </ b> asketball A </