CREATE TABLE table_31285 ("Film Festival" TEXT, "Date of ceremony" TEXT, "Category" TEXT, "Participants/Recipients" TEXT, "Result" TEXT)

Which films participated in the 30th Hawaii International Film Festival?
SELECT "Participants/Recipients" FROM table_31285 WHERE "Film Festival" = '30th Hawaii International Film Festival'
SELECT "Participants/Recipients" FROM "table_31285" WHERE "Film Festival" = '30th Hawaii International Film Festival'