which publication only received a letter score ?
CREATE TABLE table_204_692 (
    id number,
    "publication" text,
    "score" text,
    "review" text
)
SELECT "publication" FROM table_204_692 WHERE "score" IS NULL
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 publication only received a letter score ? ### Input: CREATE TABLE table_204_692 (
    id number,
    "publication" text,
    "score" text,
    "review" text
) ### Response: SELECT "publication" FROM table_204_692 WHERE "score" IS NULL