Complex sentence: René Garcia Préval (born January 17,1943) is a Haitian politician and agronomist who twice served as President of Haiti, from February 7,1996 to February 7,2001, and again from May 14,2006 to May 14,2011.
Split into simpler sentences: René Garcia Préval (born January 17,1943) is a Haitian politician and agronomist who was twice President of the Republic of Haiti. He served from February 7,1996, to February 7,2001, and from May 14,2006, to May 14,2011.