YOU SAID:
Watashi wa no desu chan sempai san
INTO JAPANESE
わたしはいなくちゃんセンパイさん
BACK INTO ENGLISH
I am missing Senpai
INTO JAPANESE
私は先輩が行方不明です
BACK INTO ENGLISH
My seniors are missing
INTO JAPANESE
私の先輩は行方不明です
BACK INTO ENGLISH
My senior is missing
INTO JAPANESE
私の年配者がいない
BACK INTO ENGLISH
I have no older people
INTO JAPANESE
私には高齢者がいません
BACK INTO ENGLISH
I do not have an elderly person.
INTO JAPANESE
私には高齢者はいません。
BACK INTO ENGLISH
I do not have an elderly person.
That didn't even make that much sense in English.