sentence1: Ross was originally imprisoned at North Point , then marched to Sham Shui Po Barracks and finally shipped to Innoshima where he worked at Habu Dockyard for Osaka Ironworks .
sentence2: Originally , Ross was imprisoned in North Point , then marched to Habu Dockyard , and finally shipped to Innoshima , where he worked for Osaka Ironworks in Sham Shui Po Barracks .