CREATE TABLE table_31518 ("Rnd" FLOAT, "Circuit" CLOB, "Location" CLOB, "Date" CLOB, "Pole position" CLOB, "Fastest lap" CLOB, "Winning driver" CLOB, "Winning team" CLOB, "Supporting" CLOB)

What is the circuit located in baltimore , maryland?
SELECT "Circuit" FROM table_31518 WHERE "Location" = 'Baltimore , Maryland'
SELECT "Circuit" FROM "table_31518" WHERE "Location" = 'Baltimore , Maryland'