CREATE TABLE table_50517 ("Nominative" TEXT, "Ergative" TEXT, "Dative" TEXT, "Genitive" TEXT, "Instrumental" TEXT, "Adverbial" TEXT)

With a nominative of chven-i what is the ergative?
SELECT "Ergative" FROM table_50517 WHERE "Nominative" = 'chven-i'
SELECT "Ergative" FROM "table_50517" WHERE "Nominative" = 'chven-i'