input: Write a function to determine if it is possible to create a HTML page that displays a table of contents from the data stored in a database. If it is possible return True else return False.
  assert can_create_html_toc(True)==True
  assert can_create_html_toc(False)==False
  assert can_create_html_toc(None)==False
output: def can_create_html_toc(data_exists):
      return data_exists if data_exists is not None else False