CREATE TABLE table_21709 ("Class" TEXT, "Part 1" TEXT, "Part 2" TEXT, "Part 3" TEXT, "Part 4" TEXT, "Verb meaning" TEXT)

What's the part 3 of the verb whose class is 4?
SELECT "Part 3" FROM table_21709 WHERE "Class" = '4'
SELECT "Part 3" FROM "table_21709" WHERE "Class" = '4'