human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Player, Played, Legs Won, Legs Lost, 100+, 140+, 180s, High Checkout, 3-dart Average
###Question: What is the number of high checkout when legs Lost is 17, 140+ is 15, and played is larger than 4?
gpt
SELECT SUM High Checkout FROM table WHERE Legs Lost = 17 AND 140+ = 15 AND Played > 4