How many seats does the BTC-5 model have?
CREATE TABLE table_79959 (
    "Year built" text,
    "Builder" text,
    "Model" text,
    "Fleet ID" text,
    "Seats" real
)
SELECT SUM("Seats") FROM table_79959 WHERE "Model" = 'btc-5'
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 seats does the BTC-5 model have? ### Input: CREATE TABLE table_79959 (
    "Year built" text,
    "Builder" text,
    "Model" text,
    "Fleet ID" text,
    "Seats" real
) ### Response: SELECT SUM("Seats") FROM table_79959 WHERE "Model" = 'btc-5'