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_66 (height__cm_ INTEGER, birthdate VARCHAR, weight__kg_ VARCHAR, position VARCHAR)
  ### Question:
  What is the average Height when the weight is less than 91 and the position is d, and a Birthdate of july 4, 1975?
  ### Answer:
  SELECT AVG(height__cm_) FROM table_name_66 WHERE weight__kg_ < 91 AND position = "d" AND birthdate = "july 4, 1975"