YOU SAID:

My cow is being abducted by a UFO that is being abducted by a cow being abducted by a UFO.

INTO JAPANESE

私の牛はUFOに誘拐されていますUFOに誘拐されています

BACK INTO ENGLISH

My cow has been kidnapped by the UFO.

INTO JAPANESE

私の牛はUFOに誘拐された

BACK INTO ENGLISH

My cow was kidnapped by the UFO.

INTO JAPANESE

私の牛はUFOに誘拐された

BACK INTO ENGLISH

My cow was kidnapped by the UFO.