CREATE TABLE table_6978 ("Date" CLOB, "Tournament" CLOB, "Surface" CLOB, "Partnering" CLOB, "Opponents in the final" CLOB, "Score" CLOB)

What was the score of the game that was played on a grass surface?
SELECT "Score" FROM table_6978 WHERE "Surface" = 'grass'
SELECT "Score" FROM "table_6978" WHERE "Surface" = 'grass'