input: Write a python function to set up an SQLite database and insert some data.
  assert setup_database() is None
  assert insert_data('first_query', 'first_result') is None
  assert insert_data('second_query', 'second_result') is None
output: import sqlite3
  
  def setup_database():
      conn = sqlite3.connect('example.db')
      c = conn.cursor()
      c.execute('''CREATE TABLE IF NOT EXISTS queries
                   (query text, result text)''')
      conn.commit()
      conn.close()
  
  def insert_data(query, result):
      conn = sqlite3.connect('example.db')
      c = conn.cursor()
      c.execute("INSERT INTO queries (query, result) VALUES (?, ?)", (query, result))
      conn.commit()
      conn.close()