Complex sentence: During the ten day festival, an estimated 10,000--15,000 dogs are consumed, which traditionally been killed during the festival in conditions activists describe as brutal, with dogs beaten and boiled alive in the belief that the more terrified they are, the tastier the meat.
Split into simpler sentences: During the ten day festival, an estimated 10,000--15,000 dogs are consumed. Thousands of dogs have traditionally been killed during the festival in conditions activists describe as brutal, with dogs beaten and boiled alive in the belief that the more terrified they are, the tastier the meat.