Original sentence: Estimates of attendance varied from "around 20,000" by the police, "up to 50,000" from , to "more than 50,000" by the Socialist Workers Party
Edited sentence: Estimates of attendance varied from "around 20,000" by the police, "50,000-60,000" by the Socialist Workers Party, and the now familiar "up to 50,000" from a noncommittal StWC