text: CREATE PROCEDURE countriesSelection()
  BEGIN
  	SELECT * FROM countries WHERE continent = 'Africa';
  END
  
  /*
  
  Your friend wants to become a professional tour guide and travel all around the world. 
  In pursuit of this dream, she enrolled in tour guide school. 
  The professors in this school turned out to be very demanding, and one of them gave your friend a difficult assignment that she has to finish over the weekend.
  
  Here's the assignment: Given a list of countries, your friend should identify all the countries that are in Africa. 
  To help her, you have decided to write a function that will find all such countries from any set of countries. The countries table in which the countries are stored has the following structure:
  
  name: the name of the country;
  continent: the continent on which the country is situated;
  population: the country's population.
  
  Your task is to return a new table that has the same columns, but that only contains the countries from Africa. 
  The countries should be sorted alphabetically by their names.
  
  Example
  
  For the following table countries
  
  name	     continent	      population
  ------------------------------------
  Austria	 |  Europe	       | 8767919
  Belize	 |  North America	 | 375909
  Botswana |	Africa	       | 2230905
  Cambodia |	Asia	         | 15626444
  Cameroon |  Africa	       | 22709892
  
  /*
  