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_93 (laps INTEGER, constructor VARCHAR, time_retired VARCHAR)
### Question:
What is the mean number of laps for the constructor Ferrari when the time/retired was fuel pressure?
### Answer:
SELECT AVG(laps) FROM table_name_93 WHERE constructor = "ferrari" AND time_retired = "fuel pressure"