Complex sentence: On 31 May 2010 Zoabi participated in the Gaza flotilla, and was on board the "MV Mavi Marmara" when violence broke out as Israeli commandos boarded the ship.
Split into simpler sentences: On 31 May 2010 Zoabi participated in the Gaza flotilla. She was on board the "MV Mavi Marmara" when violence broke out as Israeli commandos boarded the ship.