Complex sentence: In 2008, the Mrs. Butterworth talking syrup bottle was featured as a guest celebrity in one of a series of commercials for Geico auto insurance, in which commercial, she is referred to as Mrs. Butterworth.
Split into simpler sentences: In 2008, the Mrs. Butterworth talking syrup bottle was featured as a guest celebrity in one of a series of commercials for Geico auto insurance. In the said commercial, she is referred to as Mrs. Butterworth.