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 "Yes" else return "No".
  assert is_table_of_contents_possible(True)=="Yes"
  assert is_table_of_contents_possible(False)=="No"
output: def is_table_of_contents_possible(possible):
      return "Yes" if possible else "No"