input: Write a python function to parse name, age, and job title from an HTML string using BeautifulSoup.
  assert parse_html('''
  <div class='data-container'>
    <span>John Smith</span>
    <span>45 years old</span>
    <span>Communications Engineer</span>
  </div>
  ''') == ('John Smith', '45 years old', 'Communications Engineer')
  assert parse_html('''
  <div class='data-container'>
    <span>Jane Doe</span>
    <span>30 years old</span>
    <span>Software Developer</span>
  </div>
  ''') == ('Jane Doe', '30 years old', 'Software Developer')
  assert parse_html('''
  <div class='data-container'>
    <span>Sam Brown</span>
    <span>22 years old</span>
    <span>Graphic Designer</span>
  </div>
  ''') == ('Sam Brown', '22 years old', 'Graphic Designer')
output: def parse_html(html_string):
      from bs4 import BeautifulSoup
      
      soup = BeautifulSoup(html_string, 'html.parser')
      data_container = soup.find('div', class_='data-container')
      spans = data_container.find_all('span')
      
      name = spans[0].text
      age = spans[1].text
      job_title = spans[2].text
      
      return (name, age, job_title)