Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Which Hanzi has a Regional Population of 4,591,972 in 2010?

### Inputs:
table_name: table, columns: ['City', 'Hanzi', 'Hanyu Pinyin', 'Regional Population(2010)', 'GDP(2011)(billion yuan)']

### Response:
SELECT Hanzi FROM table WHERE Regional Population(2010) = 4,591,972