When you want to put more emphasis in one part of a sentence vs. another, you introduce an adjective clause. The adjective clause (or subordinate clause) does the job of an adjective and follows the noun that it modifies. Though an adjective clause contains a subject and a verb as in a main clause, it can't stand alone: it has to follow a noun in a main clause. To identify an adjective clause
. in a sentence look for one of these relative pronouns: who, which, and that. Who refers to people, which refers to things and that can refer to either people or things.