You will be given a definition of a task first, then some input of the task.
In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

The park is the centerpiece of the Greater Yellowstone Ecosystem , the largest remaining nearly-intact ecosystem in the Earth 's northern temperate zone .
Output:
The park is the center of the Greater Yellowstone Ecosystem .