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_88 (heat_rank INTEGER, overall_rank VARCHAR, time VARCHAR)
  ### Question:
  I want to know the highest heat rank for overall rank of t63 and time less than 25.47
  ### Answer:
  SELECT MAX(heat_rank) FROM table_name_88 WHERE overall_rank = "t63" AND time < 25.47