Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_17 (yards_per_attempt INTEGER, net_yards INTEGER)
### Question:
How many yards per attempt have net yards greater than 631?
### Answer:
SELECT SUM(yards_per_attempt) FROM table_name_17 WHERE net_yards > 631