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_60 (rank INTEGER, source_of_copper VARCHAR)
  ### Question:
  What's the lowest ranking source of copper, copper ore, concentrated and leached?
  ### Answer:
  SELECT MIN(rank) FROM table_name_60 WHERE source_of_copper = "copper ore, concentrated and leached"