CREATE TABLE table_35339 ("Race Title" CLOB, "Circuit" CLOB, "Location / State" CLOB, "Date" CLOB, "Winner" CLOB, "Team" CLOB)

Which Location/ State has a Date of 29 31 may?
SELECT "Location / State" FROM table_35339 WHERE "Date" = '29–31 may'
SELECT "Location / State" FROM "table_35339" WHERE "Date" = '29–31 may'