Question: What is the total decile in the area of normanby with a roller smaller than 157?
SQL: SELECT SUM("Decile") FROM "2-12212087-3" WHERE "Area" = 'normanby' AND "Roll" < 157.0;

Question: What Authority has a decile greater than 5, with a roll of 170?
SQL: SELECT "Authority" FROM "2-12212087-3" WHERE "Decile" > 5.0 AND "Roll" = 170.0;