Crystal whom my father says graduated from business school runs a successful food delivery service. (commas removed)
Crystal whom my father says graduated from business school, runs a successful food-delivery service.
identifying phrase or clause – in grammar, something that clearly tells us which one (noun) we are referring to. See That vs. Which.
object pronoun – in grammar, an accusative pronoun (me, you, her, him, them, us and whom) See Personal Pronouns–referring to people.
subject pronoun – in grammar, a nominative pronoun (I, you, she, he, they, we, and who.)
time frame – in grammar, a word or phrase that specifies a small or large amount of time. See Adverbs for Time.
A woman shopping for produce. By Amanda Mills. Public Domain Files, 9 Jun 2012. publicdomainfiles.com/show_file.php?id=13393024942560