What are all locations of train stations?
CREATE TABLE train_station (
    train_id number,
    station_id number
)

CREATE TABLE train (
    train_id number,
    name text,
    time text,
    service text
)

CREATE TABLE station (
    station_id number,
    name text,
    annual_entry_exit number,
    annual_interchanges number,
    total_passengers number,
    location text,
    main_services text,
    number_of_platforms number
)
SELECT DISTINCT location FROM station
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What are all locations of train stations? ### Input: CREATE TABLE train_station (
    train_id number,
    station_id number
)

CREATE TABLE train (
    train_id number,
    name text,
    time text,
    service text
)

CREATE TABLE station (
    station_id number,
    name text,
    annual_entry_exit number,
    annual_interchanges number,
    total_passengers number,
    location text,
    main_services text,
    number_of_platforms number
) ### Response: SELECT DISTINCT location FROM station