Original: Examples derived from Jack the Ripper include the French Ripper, the DÃ 1\/4 sseldorf Ripper, the Camden Ripper, the Blackout Ripper, Jack the Stripper, the Yorkshire Ripper, and the Rostov Ripper.
Simplified: The letters were signed "Jack the Ripper". Other murders were reported around the same time but were not believed to be the work of Jack the Ripper.