Simplify the following text for a Grade 20 native English-speaking person.
Original: Notable people aboard the flotilla included Nobel Peace Prize laureate Mairead Corrigan , former UN Assistant Secretary-General Denis Halliday , Israeli-Arab member of Knesset Haneen Zoubi , leader of the northern branch of the Islamic Movement in Israel Raed Salah , Swedish novelist Henning Mankell , and a number of politicians from European and Arab national governments and the European Parliament .
Simplified: Notable people aboard the flotilla included Israeli-Arab member of Knesset Haneen Zoubi , leader of the northern branch of the Islamic Movement in Israel Raed Salah , Swedish novelist Henning Mankell , convicted hijacker ErdinÃ Tekir , who participated in the Black Sea hijacking , and a number of parliamentarians from European and Arab national legislatures and the European Parliament .