Input (grade 10): In Super Mario Bros., the player controls Mario (and in a two-player game, a second player acts as Mario's brother Luigi) as he travels through the Mushroom Kingdom in order to rescue Princess Toadstool from the antagonist Bowser.
Output (grade 2): In Super Mario Bros., Mario goes in the Mushroom Kingdom. There he must save Princess Toadstool (later Princess Peach) from Bowser.