CREATE TABLE table_71555 ("Name" TEXT, "Years" TEXT, "Gender" TEXT, "Area" TEXT, "Authority" TEXT, "Decile" FLOAT, "Roll" FLOAT)

What is the Gender of students at a school with a Decile of 5 and a Roll of 90?
SELECT "Gender" FROM table_71555 WHERE "Decile" = '5' AND "Roll" = '90'
SELECT "Gender" FROM "table_71555" WHERE "Decile" = '5' AND "Roll" = '90'