CREATE TABLE table_21700 ("Class" TEXT, "Part 1" TEXT, "Part 2" TEXT, "Part 3" TEXT, "Part 4" TEXT, "Verb meaning" TEXT)

What's the part 4 for the verb whose part 3 is borgen?
SELECT "Part 4" FROM table_21700 WHERE "Part 3" = 'borgen'
SELECT "Part 4" FROM "table_21700" WHERE "Part 3" = 'borgen'