CREATE TABLE table_63214 ("Island" CLOB, "Country" CLOB, "Population" CLOB, "Area km\\u00b2" CLOB, "Density  ( per km\\u00b2 ) " CLOB)

What is Japan's Area km ?
SELECT "Area km\u00b2" FROM table_63214 WHERE "Country" = 'japan'
SELECT "Area km\u00b2" FROM "table_63214" WHERE "Country" = 'japan'