CREATE TABLE table_31283 ("Film Festival" TEXT, "Date of ceremony" TEXT, "Category" TEXT, "Participants/Recipients" TEXT, "Result" TEXT)

Which films participated in the 61st Berlin international film festival?
SELECT "Participants/Recipients" FROM table_31283 WHERE "Film Festival" = '61st Berlin International Film Festival'
SELECT "Participants/Recipients" FROM "table_31283" WHERE "Film Festival" = '61st Berlin International Film Festival'