Complex sentence: On May 25th, 2012, Google unveiled the latest Penguin update, called Penguin 1.1, this Penguin update, according to Matt Cutts, is supposed to impact less than one-tenth of a percent of English searches.
Split into simpler sentences: On May 25th, 2012, Google unveiled the latest Penguin update, called Penguin 1.1. This Penguin update, according to Matt Cutts, is supposed to impact less than one-tenth of a percent of English searches.