YOU SAID:

I commited a crime, and i have my sister in basement to kill her.

INTO JAPANESE

私は犯罪を犯した妹を地下室に連れて行って殺した

BACK INTO ENGLISH

I took my sister to the basement where she committed the crime, and I killed her.

INTO JAPANESE

妹を地下室に連れて行って殺した

BACK INTO ENGLISH

I took my sister to the basement and I killed her.

INTO JAPANESE

妹を地下室に連れて行って殺した

BACK INTO ENGLISH

I took my sister to the basement and I killed her.