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_19 (overall INTEGER, college VARCHAR, pick__number VARCHAR)
### Question:
Which Overall is the highest one that has a College of oklahoma, and a Pick # smaller than 4?
### Answer:
SELECT MAX(overall) FROM table_name_19 WHERE college = "oklahoma" AND pick__number < 4