The graduate assistant who was in the 1st year at CU has what experience?
CREATE TABLE "coaches_staff" (
  "position" text,
  "name" text,
  "year_at_cu" text,
  "experience" real,
  "alma_mater" text
);
SELECT "experience" FROM "coaches_staff" WHERE "year_at_cu"='1st' AND "position"='graduate assistant';