彼女の住所を

her address

→ 彼女
phrase Uncommon #16,333
her address 彼女の住所 means “her address,” and を marks it as the direct object of a verb. This phrase is usually followed by a verb such as 知る (to know), 思い出す (to remember), or 書き留める (to write down).
JA: 彼女の住所を教えてください。
EN: Please tell me her address.

彼女の住所を教えてくれませんか

Could you tell me her address?

もし彼女の住所を知っていれば手紙を書くのだが

If I knew her address, I would write her a letter.

私は彼女の住所を知りません

I don't know her address.

私たちは彼女の住所を見つけ出せなかった

We couldn't find out her address.

彼女の住所を思い出せないんだ

I can't remember her address.

忘れないように彼女の住所を書き留めた

I wrote down her address so I wouldn’t forget it.

君は彼女の住所を知っているかい私は彼にたずねた

I asked him, “Do you know her address?”

あなたが彼女の住所を知らないなんて考えられない

I can't believe you don't know her address.

僕はまだ彼女の住所を思い出せない

I still can't remember her address.

彼女の住所を知っていたら彼女に手紙を書いただろう

If I had known her address, I would have written her a letter.

その時になってはじめて彼女の住所を知った

It wasn't until then that I learned her address.