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

Question: What is the County of Howard Street Tunnel?
SQL: SELECT "county" FROM "references" WHERE "name"='howard street tunnel';

Question: What is the Location of the Bridge Built in 1869?
SQL: SELECT "location" FROM "references" WHERE "built"='1869';

Question: What is the date Listed of the B & O Bridge in Washington?
SQL: SELECT "listed" FROM "references" WHERE "county"='washington' AND "name"='b & o bridge';

Question: What is the date Listed of the Bridge Built CA.1876?
SQL: SELECT "listed" FROM "references" WHERE "built"='ca.1876';

Question: What is the date Listed of the Bridge Built in 1864?
SQL: SELECT "listed" FROM "references" WHERE "built"='1864';