Complex sentence: In the year 2011 the first maintenance update "1.2" of ownCloud was released, it contained additional work by Arthur Schiwon, Jan-Christoph Borchardt, Jakob Sack and Robin Appelman.
Split into simpler sentences: In the year 2011 the first maintenance update "1.2" of ownCloud was released. It contained additional work by Arthur Schiwon, Jan-Christoph Borchardt, Jakob Sack and Robin Appelman.