Q: In this task, you're given a question, along with three passages, 1, 2, and 3. Your job is to determine which passage can be used to answer the question by searching for further information using terms from the passage. Indicate your choice as 1, 2, or 3.
Question: How many teams competed in the tournament held in 2007 to gain a spot in the 2008 Olympics U.S. Men's Basketball Team? Passage 1:Mohammad Parvin began his career at the Persepolis youth academy in Tehran before signing his first pro contract in 2005. Despite the fact that his father was the head coach of the team, he remained unused until making his debut in a friendly match against German giants Bayern Munich. Being dubbed as a future star player in the national team, his time at Persepolis turned difficult following his fathers departure as a coach. He later followed his Parvin senior, who had become technical director of Steel Azin, and became the top scorer in the first division. Following a remarkable season in a star-studded second tier side, he chose to move soon, again shortly after his fathers resignation. Despite reportedly being offered a contract by Persepolis, he moved to Saipa. It was speculated that the reason for his refusal to play at Persepolis was the troublesome relationship between Dariush Mostafavi (then Club CEO at Persepolis) and his father Ali Parvin. After only 12 performances at Saipa, he spent 6 successful months on loan at Dunajská Streda in Europe only to return to his beloved Persepolis in July 2009. His second stint at the continents most popular football team, was another difficult experience and Mohammad was on the move once again in 2011. His next stop was Paykan, another short term stint as soon newly promoted Gahar Zagros followed.
 Passage 2:The 2008 Olympics U.S. Men's Basketball Team represented the United States of America at the 2008 Summer Olympics in Beijing, China. They qualified for the Olympics by winning the FIBA American Championships 2007 held in Las Vegas, Nevada. The team was nicknamed the "Redeem Team", a play on an alternative name for the legendary 1992 squad that was called the "Dream Team", and a reference to the fact that the United States came away with disappointing Bronze Medals during the 2004 Summer Olympics and the 2006 FIBA World Championship. Kobe Bryant was named the team captain and Mike Krzyzewski was named the head coach of the 2008 team. LeBron James, called the "voice of the U.S. team" by Time, stated: "It's the gold, or it's failure." An ESPN program, Road to Redemption, followed the team's preparations.
 Passage 3:Williamson's early film work included roles in M*A*S*H (1970) and Tell Me That You Love Me, Junie Moon (1970). He portrayed an escaped slave who flees westward in The Legend of Nigger Charley (1972). He played the role of an African-American gangster in the film Black Caesar (1973) and its subsequent sequel, Hell Up in Harlem (also 1973). Williamson also starred in the 1975 western film Boss Nigger, in which he played the title role. After this he appeared as an actor in several films, most of which are considered to be of the "blaxploitation" genre. Williamson starred alongside Peter Boyle and Eli Wallach in the movie Crazy Joe (1974). In 1974, Williamson was selected by the ABC television network as a commentator on Monday Night Football to replace Don Meredith, who had left to pursue an acting and broadcasting career at rival network NBC. Williamson was used on a few pre-season broadcasts, but was quickly declared unsuitable by ABC. He was relieved of his duties at the beginning of the regular season, becoming the first MNF personality not to endure for an entire season. He was replaced by the fellow former player (and fellow Gary, Indiana, native) Alex Karras.

A:
2