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_60 (rank INTEGER, year VARCHAR, floors VARCHAR)
### Question:
What is the highest rank of a building erected in 1976 with fewer than 21 floors?
### Answer:
SELECT MAX(rank) FROM table_name_60 WHERE year = 1976 AND floors < 21