<p><strong>Pronoun</strong></p><ul><li>whose</li><li>whom</li></ul><p><strong>What person or persons?</strong></p><ul><li>Who did it? (of a person)</li><li>of what character, origin, position, importance, etc.: Who does she think she is?</li><li>the person that or any person that (used relatively to represent a specified or implied antecedent): It was who you thought.</li><li>(used relatively in restrictive and nonrestrictive clauses to represent a specified antecedent, the antecedent being a person or sometimes an animal or personified thing): Any kid who wants to can learn to swim.</li><li>Archaic: the person or persons who.</li></ul>