CREATE TABLE table_63872 ("Rank" FLOAT, "Lane" FLOAT, "Name" TEXT, "Nationality" TEXT, "Time" TEXT)

What lane has a time of 1:57.71?
SELECT SUM("Lane") FROM table_63872 WHERE "Time" = '1:57.71'
SELECT SUM("Lane") FROM "table_63872" WHERE "Time" = '1:57.71'