CREATE TABLE table_41581 ("Name" CLOB, "Japanese" CLOB, "Date of designation" CLOB, "Date of reclassification" CLOB, "Region" CLOB, "Prefecture" CLOB)

What kind of Japanese has a Region of t hoku?
SELECT "Japanese" FROM table_41581 WHERE "Region" = 'tōhoku'
SELECT "Japanese" FROM "table_41581" WHERE "Region" = 'tōhoku'