What is the district with the candidates edwin gray (dr)?
CREATE TABLE table_2668393_18 (
    district VARCHAR,
    candidates VARCHAR
)
SELECT district FROM table_2668393_18 WHERE candidates = "Edwin Gray (DR)"
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 district with the candidates edwin gray (dr)? ### Input: CREATE TABLE table_2668393_18 (
    district VARCHAR,
    candidates VARCHAR
) ### Response: SELECT district FROM table_2668393_18 WHERE candidates = "Edwin Gray (DR)"