YOU SAID:

You is a big person that are like my cousin that is my wife

INTO JAPANESE

あなたは私のいとこ、つまり私の妻のような大きな人です

BACK INTO ENGLISH

You are my cousin, my wife, a big one.

INTO JAPANESE

あなたは私のいとこであり、私の妻であり、大きな存在です。

BACK INTO ENGLISH

You are my cousin, my wife, and a big part of me.

INTO JAPANESE

あなたは私のいとこであり、妻であり、そして私の大きな一部です。

BACK INTO ENGLISH

You are my cousin, my wife, and a big part of me.