Complex sentence: An estimated 265,000 Jews were taken to the Treblinka gas chambers, and some sources describe it as the largest slaughter of any single community in World War II. The deportations ended on September 12,1942.
Split into simpler sentences: An estimated 265,000 Jews were taken to the Treblinka gas chambers. Some sources describe it as the largest slaughter of any single community in World War II. The deportations ended on until September 12,1942.