CREATE TABLE table_61285 ("Round" FLOAT, "Date" TEXT, "Grand Prix" TEXT, "Circuit" TEXT, "Pole Position" TEXT, "Fastest Lap" TEXT, "Race Winner" TEXT)

What was the fastest lap for Grand Prix dutch tt?
SELECT "Fastest Lap" FROM table_61285 WHERE "Grand Prix" = 'dutch tt'
SELECT "Fastest Lap" FROM "table_61285" WHERE "Grand Prix" = 'dutch tt'