Original sentence: "  Pepsi began showing people doing blind taste tests called Pepsi Challenge in which they preferred one product over the other, and then they began hiring more and more popular spokespersons to promote their products.Coca-Cola and Pepsi focused particularly on rock stars; notable soft drink promoters included Michael Jackson (for Pepsi) and Paula Abdul (for Diet Coke).Official consumer Website of PepsiCo.Official consumer Website of the Coca-Cola Company.Official corporate Website of PepsiCo.Official corporate Website of the Coca-Cola Company
Edited sentence: Christopher A.John Sculley.PROMO magazine on Pepsi Stuff's role in the Cola Wars.Pepsi Stuff.Pepsi began showing people doing blind taste tests called Pepsi Challenge in which they preferred one product over the other, and then they began hiring more and more popular spokespersons to promote their products.Source: PROMO Magazine.They focused particularly on rock stars; notable soft drink promoters included Michael Jackson (for Pepsi) and Paula Abdul (for Diet Coke)