CREATE TABLE table_name_15 (round_1 INT, place VARCHAR, year VARCHAR)

What is the lowest round with a place of t15 in a year earlier than 1998?
SELECT MIN(round_1) FROM table_name_15 WHERE place = "t15" AND year < 1998
SELECT MIN("round_1") FROM "table_name_15" WHERE "place" = "t15" AND "year" < 1998