YOU SAID:
Grandma got runner by a reindeer
INTO JAPANESE
おばあちゃんはトナカイによってランナーになった
BACK INTO ENGLISH
Grandma became runner by reindeer
INTO JAPANESE
おばあちゃんはトナカイによってランナーになりました
BACK INTO ENGLISH
Grandma became runner by reindeer
You've done this before, haven't you.