What is the lowest gain that has toben opurum as the name, with an avg/g less than 54.1?
CREATE TABLE "rushing" (
  "name" text,
  "gain" real,
  "loss" real,
  "long" real,
  "avg_g" real
);
SELECT MIN("gain") FROM "rushing" WHERE "name"='toben opurum' AND "avg_g"<54.1;