Task: Question Generation
Input (English): Passage: The Pistons opened the 2007 NBA Playoffs with a 4-0 victory over the Orlando Magic, their first playoff series sweep since 1990. The team advanced to face the 2006-07 Chicago Bulls season, marking the first time that the Central Division rivals had met in the postseason since 1991. After winning the first two games by 26 and 21 points, the Pistons overcame a 19-point deficit to win Game 3, 81-74. The Bulls avoided elimination by winning Games 4 and 5, but the Pistons closed out the series, 95-85, in Game 6 to advance to the Eastern Conference Finals for the fifth consecutive season. In the Eastern Conference Finals, the Pistons faced the 2006-07 Cleveland Cavaliers season. After both teams split the first four games of the series, the turning point happened in Game 5. The game is best remembered for LeBron James performance where he scored the Cavaliers final 29 of 30 points, including the teams final 25 points, to help defeat the Pistons 109-107 in double overtime. The Pistons never recovered as they were eliminated in Game 6, 98-82.
Output (English): Which team did the Pistons did not face in the Eastern Conference Finals: Cavalier or Bulls?