CREATE TABLE table_20843 ("C/W 15+" FLOAT, "Oblast\\\\Age" TEXT, "15 to 17" FLOAT, "18 to 19" FLOAT, "20 to 24" FLOAT, "25 to 29" FLOAT, "30 to 34" FLOAT, "35 to 39" FLOAT, "40 to 44" FLOAT, "45 to 49" FLOAT, "50 to 54" FLOAT, "55 to 59" FLOAT, "60 to 64" FLOAT, "65 to 69" FLOAT, "70+" FLOAT)

what is the number for 65-69 where 50-54 is 1571?
SELECT "65 to 69" FROM table_20843 WHERE "50 to 54" = '1571'
SELECT "65 to 69" FROM "table_20843" WHERE "50 to 54" = '1571'