which model is the only model to have the lowest caliber ?
CREATE TABLE table_203_253 (
    id number,
    "model" text,
    "frame" text,
    "years mfg'd" text,
    "caliber(s)" text,
    "production" text,
    "barrel" text,
    "notes" text
)
SELECT "model" FROM table_203_253 ORDER BY "caliber(s)" 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: which model is the only model to have the lowest caliber ? ### Input: CREATE TABLE table_203_253 (
    id number,
    "model" text,
    "frame" text,
    "years mfg'd" text,
    "caliber(s)" text,
    "production" text,
    "barrel" text,
    "notes" text
) ### Response: SELECT "model" FROM table_203_253 ORDER BY "caliber(s)" LIMIT 1