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

### Instruction:
What rank was Core Districts + Inner Suburbs and had a population of 10123000?

### Inputs:
table_name: table, columns: ['Rank', 'City', 'Population', 'Definition', 'Country']

### Response:
SELECT MAX Rank FROM table WHERE Definition = core districts + inner suburbs AND Population = 10123000