CREATE TABLE table_14230 ("Team" TEXT, "Tries for" FLOAT, "Tries against" FLOAT, "Try diff" TEXT, "Points for" FLOAT, "Points against" FLOAT, "Points diff" TEXT)

Which Tries against has Points against larger than 156, and Points for of 127, and Tries for larger than 17?
SELECT AVG("Tries against") FROM table_14230 WHERE "Points against" > '156' AND "Points for" = '127' AND "Tries for" > '17'
SELECT AVG("Tries against") FROM "table_14230" WHERE "Points against" > '156' AND "Points for" = '127' AND "Tries for" > '17'