How many districts does william b. oliver represent?
CREATE TABLE table_1342359_2 (
    district VARCHAR,
    incumbent VARCHAR
)
SELECT COUNT(district) FROM table_1342359_2 WHERE incumbent = "William B. Oliver"
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: How many districts does william b. oliver represent? ### Input: CREATE TABLE table_1342359_2 (
    district VARCHAR,
    incumbent VARCHAR
) ### Response: SELECT COUNT(district) FROM table_1342359_2 WHERE incumbent = "William B. Oliver"