YOU SAID:

White horse down under, ref horse

INTO JAPANESE

白い馬の下で、ref 馬

BACK INTO ENGLISH

Below the white horse is the horse ref

INTO JAPANESE

白い馬の下は馬 ref です。

BACK INTO ENGLISH

Below the white horse is the horse ref.

INTO JAPANESE

白い馬以下馬 ref です。

BACK INTO ENGLISH

Below the white horse is the horse ref.