YOU SAID:

my cat ate the dog in my neighborhood that killed my friend Jess

INTO JAPANESE

私の猫は私の友人ジェスを殺した私の近所の犬を食べ

BACK INTO ENGLISH

My cat ate my neighbor's dog that killed my friend Jess

INTO JAPANESE

私の猫は私の友人ジェスを殺した私の隣人の犬を食べ

BACK INTO ENGLISH

My cat ate my neighbor's dog that killed my friend Jess