Instructions: You are given a passage. You need to construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) its answer is the whole paragraph. Avoid creating questions that can be answered correctly without actually understanding the paragraph.
Input: Other lists I've seen count that 28 mm figure as Tokyo/Yokohama, sprawling outside the city proper. This list of top ten most populous *urban areas* (the city proper) puts Tokyo at #10:\n\n1. Seoul 10.2 million \n2. Sao Paulo 10 million\n3. Mumbai 9.9 million\n4. Jakarta 9.37 million\n5. Karachi 9.3 million\n6. Moscow 8.29 million\n7. Istanbul 8.26 million\n8. Mexico City 8.23 million\n9. Shanghai 8.2 million\n10. Tokyo 8.1 million
Output:
What is  the largest city in the world?