Original sentence: Each chunk is then marked with a small, color coded flag by officials in the chunking zone on  ATVs.Pumpkin chucking competitions, formal and informal, exist throughout the United States in the fall, when pumpkins are harvested , and a European Championship has been held in Bikschote, Belgium since 2004.Punkin' Chunkin' The official event site
Edited sentence: Each chunk is then marked with a small, color coded flag by officials in the chunking zone on ATVs.Pumpkin chucking competitions, formal and informal, exist throughout the United States in the fall, when pumpkins are harvested,.and a European Championship has been held in Bikschote, Belgium since 2004