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_40 (k_2_o INTEGER, al_2_o_3 VARCHAR, objects VARCHAR, na_2_o VARCHAR, fe_2_o_3 VARCHAR)
  ### Question:
  What is the highest K 2 O, when Na 2 O is greater than 1.87, when Fe 2 O 3 is greater than 0.07, when Objects is Ritual Disk, and when Al 2 O 3 is less than 0.62?
  ### Answer:
  SELECT MAX(k_2_o) FROM table_name_40 WHERE na_2_o > 1.87 AND fe_2_o_3 > 0.07 AND objects = "ritual disk" AND al_2_o_3 < 0.62