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_261642_3 (c__nf_km_ VARCHAR, r__ω_km_ VARCHAR)
  ### Question:
  What is the c (nf/km) when the r (ω/km) is 463.59?
  ### Answer:
  SELECT c__nf_km_ FROM table_261642_3 WHERE r__ω_km_ = "463.59"