This document discusses adjective clauses and the use of who and whom in adjective clauses. It provides examples of sentences combined using adjective clauses with who and whom. Who is used as a subject pronoun in adjective clauses, while whom is used as an object pronoun. The examples show that you don't need the subject or object pronouns like they or them when who or whom is used in the adjective clause. An exercise is provided to test combining sentences using adjective clauses.