YOU SAID:
red dog ate blue dog and made a purple dog
INTO JAPANESE
赤い犬は青い犬を食べて紫色の犬を作った
BACK INTO ENGLISH
A red dog eats a blue dog and made a purple dog
INTO JAPANESE
赤い犬が青い犬を食べて紫色の犬を作った
BACK INTO ENGLISH
A red dog eats a blue dog and made a purple dog
That didn't even make that much sense in English.