CREATE TABLE table_name_5 (population VARCHAR2, former_local_authority VARCHAR2, name VARCHAR2)

What is the population of the Parish, Plumbland, that had a former local authority of Cockermouth Rural District?
SELECT COUNT(population) FROM table_name_5 WHERE former_local_authority = "cockermouth rural district" AND name = "plumbland"
SELECT COUNT("population") FROM "table_name_5" WHERE "cockermouth rural district" = "former_local_authority" AND "name" = "plumbland"