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_95 (opponent VARCHAR, round VARCHAR, event VARCHAR)
### Question:
Who was the opponent during the UFC 90 event with a fight that lasted less than 4 rounds?
### Answer:
SELECT opponent FROM table_name_95 WHERE round < 4 AND event = "ufc 90"