YOU SAID:

This that these them those

INTO JAPANESE

これは、これらそれら

BACK INTO ENGLISH

This is because these

INTO JAPANESE

これは、これらの理由です

BACK INTO ENGLISH

This is the reason for these

INTO JAPANESE

これが、これらの理由です。

BACK INTO ENGLISH

This is the reason for these.

INTO JAPANESE

これが理由です。

BACK INTO ENGLISH

So, hence this.

INTO JAPANESE

これが理由です。

BACK INTO ENGLISH

So, hence this.