How many bypass boosters are there on the engine with slit exhaust ports and SPI is yes?
CREATE TABLE table_16731248_1 (bypass_boosters VARCHAR, spi VARCHAR, exhaust_ports VARCHAR)
SELECT bypass_boosters FROM table_16731248_1 WHERE spi = "Yes" AND exhaust_ports = "Slit"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_16731248_1 (bypass_boosters VARCHAR, spi VARCHAR, exhaust_ports VARCHAR) Question: How many bypass boosters are there on the engine with slit exhaust ports and SPI is yes? [/INST] SELECT bypass_boosters FROM table_16731248_1 WHERE spi = "Yes" AND exhaust_ports = "Slit" </s>