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 (date VARCHAR, location VARCHAR, cause VARCHAR, death_toll VARCHAR)
  ### Question:
  When has a cause of gas explosion, a Death toll smaller than 63, and a Location of penygraig?
  ### Answer:
  SELECT date FROM table_name_60 WHERE cause = "gas explosion" AND death_toll < 63 AND location = "penygraig"