What is the location code with the most documents?
CREATE TABLE ref_calendar (
    calendar_date time,
    day_number number
)

CREATE TABLE roles (
    role_code text,
    role_name text,
    role_description text
)

CREATE TABLE all_documents (
    document_id number,
    date_stored time,
    document_type_code text,
    document_name text,
    document_description text,
    other_details text
)

CREATE TABLE ref_locations (
    location_code text,
    location_name text,
    location_description text
)

CREATE TABLE documents_to_be_destroyed (
    document_id number,
    destruction_authorised_by_employee_id number,
    destroyed_by_employee_id number,
    planned_destruction_date time,
    actual_destruction_date time,
    other_details text
)

CREATE TABLE ref_document_types (
    document_type_code text,
    document_type_name text,
    document_type_description text
)

CREATE TABLE document_locations (
    document_id number,
    location_code text,
    date_in_location_from time,
    date_in_locaton_to time
)

CREATE TABLE employees (
    employee_id number,
    role_code text,
    employee_name text,
    gender_mfu text,
    date_of_birth time,
    other_details text
)
SELECT location_code FROM document_locations GROUP BY location_code ORDER BY COUNT(*) DESC LIMIT 1
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 is the location code with the most documents? ### Input: CREATE TABLE ref_calendar (
    calendar_date time,
    day_number number
)

CREATE TABLE roles (
    role_code text,
    role_name text,
    role_description text
)

CREATE TABLE all_documents (
    document_id number,
    date_stored time,
    document_type_code text,
    document_name text,
    document_description text,
    other_details text
)

CREATE TABLE ref_locations (
    location_code text,
    location_name text,
    location_description text
)

CREATE TABLE documents_to_be_destroyed (
    document_id number,
    destruction_authorised_by_employee_id number,
    destroyed_by_employee_id number,
    planned_destruction_date time,
    actual_destruction_date time,
    other_details text
)

CREATE TABLE ref_document_types (
    document_type_code text,
    document_type_name text,
    document_type_description text
)

CREATE TABLE document_locations (
    document_id number,
    location_code text,
    date_in_location_from time,
    date_in_locaton_to time
)

CREATE TABLE employees (
    employee_id number,
    role_code text,
    employee_name text,
    gender_mfu text,
    date_of_birth time,
    other_details text
) ### Response: SELECT location_code FROM document_locations GROUP BY location_code ORDER BY COUNT(*) DESC LIMIT 1