Complex sentence: Scarlett Johansson/Bjork is the 622nd episode of Saturday Night Live, airing on April 21,2007, with host Scarlett Johansson and musical guest Bjork.
Split into simpler sentences: Scarlett Johansson/Bjork is the 622nd episode of Saturday Night Live. It aired on April 21,2007, hosted by Scarlett Johansson with musical guest Bjork.