Task: Sentence Expansion
Input (English): Xu Chongde ( 15 January 1929 – 3 March 2014 ) was a Chinese legal expert , professor and political scientist .
Output (English): Xu Chongde ( 15 January 1929 – 3 March 2014 ) was a well-known legal expert and professor , political scientist , and the member of the Communist Party of China in the People 's Republic of China .