Complex sentence: In 2013, Tutu was a mentor for Unreasonable at Sea, a technology business accelerator for social entrepreneurs seeking to scale their ventures in international markets, founded by Unreasonable Group, Semester at Sea, and Stanford's Hasso Plattner Institute of Design.
Split into simpler sentences: In 2013, Tutu was a mentor for Unreasonable at Sea, a technology business accelerator for social entrepreneurs seeking to scale their ventures in international markets. Founded by Unreasonable Group, Semester at Sea, and Stanford's Hasso Plattner Institute of Design.