CREATE TABLE "membership" (
  "school" text,
  "location" text,
  "mascot" text,
  "num_county" text,
  "ihsaa_class" text,
  "year_joined" real,
  "previous_conference" text
);

Question: which # / county is correct for year less than 1981 and chalmers as location?
SQL: SELECT "num_county" FROM "membership" WHERE "year_joined"<1981 AND "location"='chalmers';

Question: what is the correct year for # / county of 09 cass?
SQL: SELECT "year_joined" FROM "membership" WHERE "num_county"='09 cass';

Question: what's the mascot for 66 pulaski 2?
SQL: SELECT "mascot" FROM "membership" WHERE "num_county"='66 pulaski 2';