Which year's crew is varsity 8+ when the record is 7-3?
CREATE TABLE "season_by_season_results" (
  "year" text,
  "coach" text,
  "crew" text,
  "record" text,
  "win_pct" real
);
SELECT "year" FROM "season_by_season_results" WHERE "crew"='varsity 8+' AND "record"='7-3';