How many seats does the BTC-5 model have?
CREATE TABLE table_name_57 (seats INTEGER, model VARCHAR)
SELECT SUM(seats) FROM table_name_57 WHERE model = "btc-5"
### Context: CREATE TABLE table_name_57 (seats INTEGER, model VARCHAR) ### Question: How many seats does the BTC-5 model have? ### Answer: SELECT SUM(seats) FROM table_name_57 WHERE model = "btc-5"