A: Who is this? B: This is Matthew, my brother. He lives in Australia.
This is Matthew, my brother, who lives in Australia.
Who are they? B: These are Tim and June, my friends. They are actors.
These are Tim and June, my friends who are actors.
What kind of people do you despise?
I despise people who don't help others (example)
What do you need to travel abroad?
(open answer) I need a passport, luggage and a visa.