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 ENROLLED_IN (StuID VARCHAR, Grade VARCHAR)
  ### Question:
  Find the number of students that have at least one grade "B".
  ### Answer:
  SELECT COUNT(DISTINCT StuID) FROM ENROLLED_IN WHERE Grade = "B"