which has graffiti on it/that has graffiti on it

[navi tasan]

Are these sentences correct with the given meaning:

1-I went in through the main door of the building, which has graffiti on it.
(The building has one main door. The door has graffiti on it. I went in through the main door. Here "which has graffiti on it" is supposed to modify "the main door" and not "the building".)

2-I went in through the door of the building that has graffiti on it.
(The building has more than one door. One of them has graffiti on it. I went in through that door.
Here, "that has graffiti on it" is supposed to modify "the door" and not "the building.)


3-I went in through that door of the building that has graffiti on it.
(Same as 2)

Gratefully,
Navi.

[emsr2d2]

For me, they are all ambiguous and the graffiti could be on the door or the building. To make it clear that the graffiti is on the door, I would say "I went in through the building's main door, which has graffiti on it" or "I went in through the building's graffiti-covered main door".