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

### Instruction:
What is the population of the Parish, Plumbland, that had a former local authority of Cockermouth Rural District?

### Inputs:
table_name: table, columns: ['Name', 'Status', 'Population', 'District', 'Former local authority']

### Response:
SELECT COUNT Population FROM table WHERE Former local authority = cockermouth rural district AND Name = plumbland