What is the formation that had the specimen discovered before 2001 and is in an Indianapolis, Indiana museum?
CREATE TABLE "specimen_data" (
  "name" text,
  "discovered" real,
  "museum" text,
  "museum_city" text,
  "discoverer" text,
  "formation" text,
  "location" text
);
SELECT "formation" FROM "specimen_data" WHERE "discovered"<2001 AND "museum_city"='indianapolis, in';