CREATE TABLE "references" (
  "name" text,
  "built" text,
  "listed" text,
  "location" text,
  "county" text
);

Question: When was the oakachoy covered bridge listed?
SQL: SELECT "listed" FROM "references" WHERE "name"='oakachoy covered bridge';

Question: In which county is the swann covered bridge located?
SQL: SELECT "county" FROM "references" WHERE "name"='swann covered bridge';

Question: Which bridge is located in Nectar, in Blount County?
SQL: SELECT "name" FROM "references" WHERE "county"='blount' AND "location"='nectar';

Question: Which county built a bridge in 1934?
SQL: SELECT "county" FROM "references" WHERE "built"='1934';

Question: In which year did Blount County build a bridge in Cleveland that was listed on 1981-08-20?
SQL: SELECT "built" FROM "references" WHERE "county"='blount' AND "listed"='1981-08-20' AND "location"='cleveland';