YOU SAID:

This is important, because I believe Urist was killed by mafia.

INTO JAPANESE

私はUristがマフィアによって殺されたと思うので、これは重要です。

BACK INTO ENGLISH

This is important because I think Urist was killed by the mafia.

INTO JAPANESE

私はUristがマフィアによって殺されたと思うのでこれは重要です。

BACK INTO ENGLISH

This is important because I think Urist was killed by the mafia.