input: 
  def execute_horror_query(db_connection: sqlite3.Connection) -> None:
      """ Execute an SQL query to retrieve all rows from the 'Movies' table
      where the category is 'horror' and print each row.
      >>> conn = sqlite3.connect(':memory:')
      >>> cursor = conn.cursor()
      >>> cursor.execute("CREATE TABLE Movies (title TEXT, category TEXT)")
      >>> cursor.execute("INSERT INTO Movies VALUES ('Halloween', 'horror')")
      >>> cursor.execute("INSERT INTO Movies VALUES ('The Shining', 'horror')")
      >>> cursor.execute("INSERT INTO Movies VALUES ('Jurassic Park', 'adventure')")
      >>> conn.commit()
      >>> execute_horror_query(conn)
      ('Halloween', 'horror')
      ('The Shining', 'horror')
      """
      cursor = db_connection.cursor()
      cursor.execute("SELECT * FROM Movies WHERE category = 'horror'")
      result = cursor.fetchall()
      for row in result:
          print(row)
  
output:     cursor = db_connection.cursor()
      cursor.execute("SELECT * FROM Movies WHERE category = 'horror'")
      result = cursor.fetchall()
      for row in result:
          print(row)