CREATE TABLE table_37959 ("Date" TEXT, "Time" TEXT, "Score" TEXT, "Set 1" TEXT, "Set 2" TEXT, "Set 3" TEXT, "Total" TEXT)

Which Total has a Score of 1 3, and a Set 1 of 29 31?
SELECT "Total" FROM table_37959 WHERE "Score" = '1–3' AND "Set 1" = '29–31'
SELECT "Total" FROM "table_37959" WHERE "Score" = '1–3' AND "Set 1" = '29–31'