Complex sentence: Evan Williams (born March 31,1972) is an American entrepreneur who has founded several Internet companies, including Pyra Labs (creator of weblog-authoring software Blogger) and Twitter, where he was previously CEO.
Split into simpler sentences: Evan Williams (born March 31,1972) is an American entrepreneur who has founded several Internet companies. Blogger, weblog-authoring software of Pyra Labs, and Twitter, where he was previously CEO.