I want to know the answer to the following question:
How large is the Tallgrass Prairie Preserve?
All the background I'm provided with is that "With 39,000 acres (158 km2), the Tallgrass Prairie Preserve in north-central Oklahoma is the largest protected area of tallgrass prairie in the world and is part of an ecosystem that encompasses only 10 percent of its former land area, once covering 14 states.". Is that enough to answer the question?
Answer: yes