Original sentence: A 2001 Greenpeace claimed that "two witnesses that accused them later admitted that Shell and the military had bribed them with promises of money and jobs at Shell.Shell maintained that it asked the Nigerian government for clemency towards those found guilty but its request was refused
Edited sentence: While Shell maintained that it asked the Nigerian government for clemency towards those found guilty but its request was refused, a 2001 Greenpeace report found that "two witnesses that accused them later admitted that Shell and the military had bribed them with promises of money and jobs at Shell