Question: Which nation did the NBA All-Star, part of the Cavaliers-Warriors rivalry and NBA's most valuable player in 2015, represent at the 2012 Summer Olympics?

The 2014–15 NBA season was the 69th season of the National Basketball Association (NBA).  The NBA draft took place on June 26, 2014, at Barclays Center in Brooklyn, where Andrew Wiggins was selected first overall.  The regular season began on Tuesday, October 28, 2014, when the defending NBA champions San Antonio Spurs hosted the first game against the Dallas Mavericks.  Christmas games were played on Thursday, December 25, 2014.  The 2015 NBA All-Star Game was played on Sunday, February 15, 2015, at Madison Square Garden in New York City, with the West defeating the East 163-158.  Oklahoma City's Russell Westbrook won the NBA All-Star Game Most Valuable Player Award.  The regular season ended on Wednesday April 15, 2015 and the playoffs began on Saturday, April 18, 2015 and ended with the 2015 NBA Finals on June 16, 2015, after the Golden State Warriors defeated the Cleveland Cavaliers in six games to win their fourth NBA title. <SEP> The 2016 NBA All-Star Game was an exhibition basketball game that was played on February 14, 2016.  It was the 65th NBA All-Star Game.  The Western Conference won 196–173 over the Eastern Conference, and Russell Westbrook was named the NBA All-Star Game Most Valuable Player (MVP).  It was held at Air Canada Centre in Toronto, home of the Toronto Raptors.  The Raptors were awarded the All-Star Game in an announcement on September 30, 2013.  This was the first time that the game was held outside the United States.  TSN and Sportsnet televised the game nationally in Canada, while TNT and TBS televised the game nationally in the United States.  This was also the 18th and final All-Star Game in which Kobe Bryant participated, as a result of his retirement after the 2015–16 season. <SEP>  While the two teams have played each other since the Cavaliers joined the league in 1970, their rivalry did not develop until the 2014–15 season, when they met in the first of three consecutive NBA Finals series.  The two teams have met in three straight NBA Finals, becoming the only two teams in NBA history to do so. The Cavaliers–Warriors rivalry is a National Basketball Association (NBA) rivalry between the Cleveland Cavaliers and the Golden State Warriors.  Of these three series, the Warriors have won two, most recently in 2017the Cavaliers have won one, in 2016.  The two teams feature 11 NBA All-Stars: LeBron James, Kyrie Irving, Kevin Love, Deron Williams and Kyle Korver (Cleveland), and Stephen Curry, Kevin Durant, Draymond Green, Klay Thompson, David West and Andre Iguodala (Golden State).  Two players, Andrew Bogut and Anderson Varejão, played for both teams during this time. <SEP>  He was also a member of the United States national team at the 2010 FIBA World Championship and 2012 Summer Olympics, winning the gold medal both times. Andre Tyler Iguodala ( ; born January 28, 1984) is an American professional basketball player for the Golden State Warriors of the National Basketball Association (NBA).  The swingman was an NBA All-Star in 2012 and has been named to the NBA All-Defensive Team twice.  Iguodala won an NBA championship with the Warriors in 2015, when he was named the NBA Finals Most Valuable Player.  Iguodala helped the Warriors return to the NBA Finals for a third straight year in 2017, winning his second NBA Championship.