Complex sentence: He served as the Chief Minister of Uttar Pradesh from 1989 to 1991,1993 to 1995, and 2003 to 2007, and as the Minister of Defence of India from 1996 to 1998 in the United Front government.
Split into simpler sentences: He served as the Chief Minister of Uttar Pradesh from 1989 to 1991, from 1993 to 1995, and from 2003 to 2007. He also served as the Minister of Defence of India from 1996 to 1998 in the United Front government.