CREATE TABLE table_29997 ("Pick" FLOAT, "Player" CLOB, "Position" CLOB, "Nationality" CLOB, "NHL team" CLOB, "College/junior/club team" CLOB)

How many different nationalities is pick number 179?
SELECT COUNT("Nationality") FROM table_29997 WHERE "Pick" = '179'
SELECT COUNT("Nationality") FROM "table_29997" WHERE "Pick" = '179'