Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_67 (source VARCHAR, cartridge VARCHAR)
### Question:
What is Source, when Cartridge is .375 remington ultra magnum?
### Answer:
SELECT source FROM table_name_67 WHERE cartridge = ".375 remington ultra magnum"