CREATE TABLE table_51159 ("Date" CLOB, "Tournament" CLOB, "Round" CLOB, "Ground" CLOB, "Opponent" CLOB, "Score 1" CLOB)

What tournament took place on Ground A with 8 rounds?
SELECT "Tournament" FROM table_51159 WHERE "Ground" = 'a' AND "Round" = '8'
SELECT "Tournament" FROM "table_51159" WHERE "Ground" = 'a' AND "Round" = '8'