CREATE TABLE table_name_20 (location VARCHAR, result VARCHAR, loser VARCHAR, year VARCHAR)

What is the location when the new york jets lost earlier than 1997 and a Result of 31 28?
SELECT location FROM table_name_20 WHERE loser = "new york jets" AND year < 1997 AND result = "31–28"
SELECT "location" FROM "table_name_20" WHERE "31–28" = "result" AND "loser" = "new york jets" AND "year" < 1997