This is Mr.Kato, the person (who) will be guiding us today.
I know a little boy (whose) parents have passed away.
She is a good interpreter (who) I believe can help you.
That's the restaurant (which/that) just opened six months ago.
Yukari got everything (that) she wanted.
Nagasaki is a city (which/that) I'd like to visit.
That house, the roof of (which) is red, is mine.
He is the man with (whom) I talked last night.
Beth told me the phone number of the hotel (which/that) she was staying at.
This is the very house (that) I wish to live in.