Hi teachers, help me please! I am stuck with the bellow sentences.

(a) There is someone I want you to meet.
(b) Everything he said was pure nonsense.
(c) Anyone who wants to come is welcome.

(1)Could you please find out where the adjective clauses are?

(2)Could you please kindly enough and find out the adjective clauses which modify indefinite pronouns?

Thank you very much.