YOU SAID:

The monster came from Mars and ate my sister

INTO JAPANESE

怪物は火星から来て、私の妹を食べました

BACK INTO ENGLISH

Monster come from Mars, I ate my sister

INTO JAPANESE

モンスターが火星から来て、私は私の妹を食べました

BACK INTO ENGLISH

Monster came from Mars, I ate my sister

INTO JAPANESE

モンスターは、火星から来た私は私の妹を食べました

BACK INTO ENGLISH

Monster, I ate my sister came from Mars

INTO JAPANESE

モンスター、私は私の妹は火星から来た食べました

BACK INTO ENGLISH

Monster, I ate my sister came from Mars