CREATE TABLE table_30578 ("Pick #" FLOAT, "Player" CLOB, "Position" CLOB, "Nationality" CLOB, "NHL team" CLOB, "College/junior/club team" CLOB)

What nationality is listed when the college/junior/club team is oshawa generals (ohl)?
SELECT "Nationality" FROM table_30578 WHERE "College/junior/club team" = 'Oshawa Generals (OHL)'
SELECT "Nationality" FROM "table_30578" WHERE "College/junior/club team" = 'Oshawa Generals (OHL)'