What's the smallest season for Montreal that's greater than 5,100 for capacity?
CREATE TABLE "r_seau_du_sport_tudiant_du_qu_bec_dunsmo" (
  "institution" text,
  "team" text,
  "city" text,
  "province" text,
  "first_season" real,
  "head_coach" text,
  "enrollment" real,
  "football_stadium" text,
  "capacity" real
);
SELECT MIN("first_season") FROM "r_seau_du_sport_tudiant_du_qu_bec_dunsmo" WHERE "city"='montreal' AND "capacity">'5,100';