Question: What's the date that Morocco has an Against along with a surface of Hard?
SQL: SELECT "Date" FROM "2-11636213-6" WHERE "Against" = 'Morocco' AND "Surface" = 'Hard';

Question: What's Round has a Surface of Hard and Opponent of Jelena Simic?
SQL: SELECT "Round" FROM "2-11636213-6" WHERE "Surface" = 'Hard' AND "Opponent" = 'Jelena Simic';