Complex sentence: It is a county-level city with a population of 116,194 (2000), and is part of Jiuquan "prefecture-level city" (a multi-county administrative unit).
Split into simpler sentences: It is a county-level city with a population of 116,194 (2000). Administratively, it is part of Jiuquan "prefecture-level city" (a multi-county administrative unit).