CREATE TABLE table_4918 ("Lane" FLOAT, "Name" TEXT, "Nationality" TEXT, "50m Split" FLOAT, "Time" TEXT)

What was Arkady Vyatchanin's time?
SELECT "Time" FROM table_4918 WHERE "Name" = 'arkady vyatchanin'
SELECT "Time" FROM "table_4918" WHERE "Name" = 'arkady vyatchanin'