CREATE TABLE table_47928 ("Date" CLOB, "Tournament" CLOB, "Surface" CLOB, "Opponent in the final" CLOB, "Score" CLOB)

What day was the score for tournament of alcoba a 6 3, 2 6, 7 5?
SELECT "Date" FROM table_47928 WHERE "Tournament" = 'alcobaça' AND "Score" = '6–3, 2–6, 7–5'
SELECT "Date" FROM "table_47928" WHERE "Score" = '6–3, 2–6, 7–5' AND "Tournament" = 'alcobaça'