CREATE TABLE table_8515 ("Rank" FLOAT, "Team" TEXT, "Round1" FLOAT, "Round2" FLOAT, "Round3" FLOAT, "Round4" FLOAT, "Round5" FLOAT, "Total Points" FLOAT)

what is the lowest round3 when round4 is 37?
SELECT MIN("Round3") FROM table_8515 WHERE "Round4" = '37'
SELECT MIN("Round3") FROM "table_8515" WHERE "Round4" = '37'