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

### Instruction:
Which urban area has a population of 5.3 million?

### Inputs:
table_name: table, columns: ['City proper', 'Population City limits in millions', 'Density per km²', 'Urban area', 'Population Urban area in millions', 'Metro area', 'Population Metro area in millions']

### Response:
SELECT Urban area FROM table WHERE Population Urban area in millions = 5.3