Task: Question Answering
Input (English): passage: Historically, the dunk contest drew some mild criticisms. One is that players who often compete in these contests are seen as dunkers only (with the obvious exceptions of Michael Jordan, Kobe Bryant, and Julius Erving), which is why notable high flying athletes like Shawn Marion and LeBron James have sometimes refused to participate. High-profile players such as Dwyane Wade and Charles Barkley have also declined to participate citing it as an unnecessary risk to injury. In the 2000 NBA Slam Dunk Contest, Tracy McGrady injured his wrist while performing a dunk. Also in the 1995 NBA Slam Dunk Contest, Tony Dumas hurt his knee while performing his ``Texas Twister'' dunk. Although a longtime critic, LeBron James said he would perform in the 2010 Slam Dunk Contest. This decision was made after watching the 2009 dunk contest when Dwight Howard and Nate Robinson went at it. However, he withdrew his statement once the All-Star Weekend came around.
 question: has lebron james ever been in the dunk contest?
Output (English): No