How many incumbents are in district la-1?
CREATE TABLE table_4002 (
    "District" text,
    "Incumbent" text,
    "Cook" text,
    "Rothenberg" text,
    "CQ Politics" text,
    "Crystal Ball" text
)
SELECT COUNT("Incumbent") FROM table_4002 WHERE "District" = 'LA-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: How many incumbents are in district la-1? ### Input: CREATE TABLE table_4002 (
    "District" text,
    "Incumbent" text,
    "Cook" text,
    "Rothenberg" text,
    "CQ Politics" text,
    "Crystal Ball" text
) ### Response: SELECT COUNT("Incumbent") FROM table_4002 WHERE "District" = 'LA-1'