EF234 Adjectve clauses- higher and deeper level

who- people
that- people and things
which- things

which- if there only one of those things

My car which is a Hyundai is burgundy (brownish red).

Vancouver which is a nice city is on the ocean.
Vancouver that is a nice city is on the ocean. SOUNDS A BIT STRANGE

I like to live in a city that is near the ocean.

My phone which is two years old still works great.

My car which is three years old still runs well.
COMPLEX-ADJECTIVE CLAUSE
My car is three years old, but it still runs well.

COMPOUND

Her hometown that/which is a small city is in Japan.

Beijing which is the capital of China is a huge megacity.

I will take the bus that runs along 41st Avenue.

Is there only one or are there lots of them? which/that

DETAIL

who- people
I saw a girl who could juggle five plates.
The driver who honked at me was very angry.

Which person is that? QUESTION
She is the woman which that/who owns the business.
who sounds a bit more respectful

Who is the person over there?
Who is the person that is standing by your car?