Which pronoun case type can function as an adjective?

Possessive case pronouns can function as adjectives. Words like my, your, his, her, their, and our are examples of possessive case pronouns that can function as adjectives. They are used to show possession but also used to describe or to modify a noun in the sentence

dr. kings dream speech

explanation:

it was late in the day and hot, and after a long march and an afternoon of speeches about federal legislation, unemployment and racial and social justice, the rev. dr. martin luther king jr. finally stepped to the lectern, in front of the lincoln memorial, to address the crowd of 250,000 gathered on the national mall.