CREATE TABLE table_39051 ("Unit" TEXT, "Russian" TEXT, "Translation" TEXT, "Ratio" TEXT, "Cubic inches  ( exact ) " TEXT, "Metric value" TEXT, "Imperial" TEXT, "US Customary" TEXT)

What is the translation of chetvert?
SELECT "Translation" FROM table_39051 WHERE "Unit" = 'chetvert'
SELECT "Translation" FROM "table_39051" WHERE "Unit" = 'chetvert'