Original: He was President of Germany from 1 July 1999, until 30 June 2004, and Prime Minister of North Rhine-Westphalia from 1978 to 1998.
Simplified: He was the eighth President of the Federal Republic of Germany from July 1, 1999 until June 30, 2004 and minister president of North Rhine-Westphalia from 1978 to 1998.