Complex sentence: The Sci-Hub project started running on 5 September 2011 and was founded by Alexandra Elbakyan from Kazakhstan with the goal to increase the spread of knowledge by allowing more people to access paywalled content.
Split into simpler sentences: The Sci-Hub project started running on 5 September 2011. It was founded by Alexandra Elbakyan from Kazakhstan with the goal to increase the spread of knowledge by allowing more people to access paywalled content.