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_32 (platform INTEGER, destination VARCHAR, frequency__per_hour_ VARCHAR, operator VARCHAR)
  ### Question:
  what is the highest platform number when the frequency (per hour) is 4, the operator is london overground and the destination is west croydon?
  ### Answer:
  SELECT MAX(platform) FROM table_name_32 WHERE frequency__per_hour_ = 4 AND operator = "london overground" AND destination = "west croydon"