YOU SAID:

my friend of my sisters grandpa's uncle's mother's grandpa's neighbor died

INTO JAPANESE

姉のおじいちゃんのおじさんのおばあちゃんのおじいちゃんの隣人の友達が亡くなりました

BACK INTO ENGLISH

My sister's grandpa's uncle's grandma's grandpa's neighbor's friend died

INTO JAPANESE

姉のおじいちゃんのおじさんのおばあちゃんのおじいちゃんの隣人の友達が亡くなりました

BACK INTO ENGLISH

My sister's grandpa's uncle's grandma's grandpa's neighbor's friend died