Who came in second place when the champion was south dakota school of mines & technology?
CREATE TABLE "table1_2331549_1" (
  "year" real,
  "host_city" text,
  "host_school" text,
  "champion" text,
  "second_place" text,
  "third_place" text
);
SELECT "second_place" FROM "table1_2331549_1" WHERE "champion"='South Dakota School of Mines & Technology';