CREATE TABLE table_21097 ("Rank" FLOAT, "Team" TEXT, "Round1" FLOAT, "Round2" FLOAT, "Round3" FLOAT, "Round4" FLOAT, "Round5" FLOAT, "Total Points" FLOAT)

What was team Toshiba's round 4 score?
SELECT MIN("Round4") FROM table_21097 WHERE "Team" = 'Team Toshiba'
SELECT MIN("Round4") FROM "table_21097" WHERE "Team" = 'Team Toshiba'