What is Source, when Cartridge is .375 remington ultra magnum?
CREATE TABLE table_7375 (
    "Cartridge" text,
    "Bullet weight" text,
    "Muzzle velocity" text,
    "Muzzle energy" text,
    "Source" text
)
SELECT "Source" FROM table_7375 WHERE "Cartridge" = '.375 remington ultra magnum'
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 Source, when Cartridge is .375 remington ultra magnum? ### Input: CREATE TABLE table_7375 (
    "Cartridge" text,
    "Bullet weight" text,
    "Muzzle velocity" text,
    "Muzzle energy" text,
    "Source" text
) ### Response: SELECT "Source" FROM table_7375 WHERE "Cartridge" = '.375 remington ultra magnum'