YOU SAID:

I want a dog for my sister

INTO JAPANESE

私の妹の犬をしたいです。

BACK INTO ENGLISH

I'd like my sister's dog.

INTO JAPANESE

私の妹の犬をください。

BACK INTO ENGLISH

My sister's dog.

INTO JAPANESE

姉の所です

BACK INTO ENGLISH

My sister's.

INTO JAPANESE

姉の所です

BACK INTO ENGLISH

My sister's.