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_12095519_1 (frequency VARCHAR, origin VARCHAR)
  ### Question:
  How often does a train leave sealdah?
  ### Answer:
  SELECT frequency FROM table_12095519_1 WHERE origin = "Sealdah"