What is the Record at School of Tom O'Brien's team?
CREATE TABLE "coaches" (
  "team" text,
  "head_coach" text,
  "years_at_school" real,
  "overall_record" text,
  "record_at_school" text,
  "acc_record" text
);
SELECT "record_at_school" FROM "coaches" WHERE "head_coach"='Tom O''Brien';