text: 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_39 (floors INTEGER, name VARCHAR, year VARCHAR)
  ### Question:
  Name of 900 north michigan, and a Year smaller than 1989 involves what lowest floors?
  ### Answer:
  SELECT MIN(floors) FROM table_name_39 WHERE name = "900 north michigan" AND year < 1989