Original sentence: On May 6, 2006, The Globe and Mail printed an article by Shannon Rupp on the debate over Wikipedia's reliability based on Kevin Potvin's entry on himself
Edited sentence: Kevin Potvin's entry on himself.On May 6, 2006, The Globe and Mail printed an article  on the debate over Wikipedia's reliability using Kevin Potvin's self-serving entry on himself as an example of how someone could use Wikipedia for PR or propaganda purposes