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_91 (additional_major_sponsor_s_ VARCHAR, main_colour_s_ VARCHAR, year VARCHAR)
### Question:
What is the additional major sponsor(s) that has red as its main color after 1991?
### Answer:
SELECT additional_major_sponsor_s_ FROM table_name_91 WHERE main_colour_s_ = "red" AND year > 1991