YOU SAID:
Grandma ate at burger king
INTO JAPANESE
バーガー キングでおばあちゃんを食べた
BACK INTO ENGLISH
I ate a grandma at Burger King
INTO JAPANESE
私はバーガーキングでおばあちゃんを食べた
BACK INTO ENGLISH
I ate a grandma at Burger King
That didn't even make that much sense in English.