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_1638437_2 (pinyin VARCHAR, simplified VARCHAR)
  ### Question:
  Name the number of pinyin where simplified is 河西区
  ### Answer:
  SELECT COUNT(pinyin) FROM table_1638437_2 WHERE simplified = "河西区"